Construction & Building Business Finance UK: How Invoice Finance and Revolving Credit Facilities Can Support Cash Flow and Growth

Winning new construction contracts should be a positive step for any building business. More projects can mean increased turnover, greater profitability and opportunities to expand.

However, construction is an industry where winning more work can actually increase the pressure on cash flow.

A building contractor might secure a £1 million project but need to spend hundreds of thousands of pounds on materials, labour, plant hire and subcontractors before receiving substantial payments.

Even when a project is profitable, the timing of money coming into and leaving the business can create significant working-capital challenges.

For construction companies operating across multiple sites, these challenges can become even more pronounced.

One project may be awaiting certification of a payment application, another may have outstanding invoices, while a third requires immediate expenditure to mobilise.

This is where Invoice Finance and Revolving Credit Facilities (RCFs) can potentially help.

At Principal Business Finance, we work with a wide panel of commercial lenders to help UK construction and building businesses explore funding for working capital, contract mobilisation, expansion and business growth.

In this article, we explore how Invoice Finance and RCFs work, the differences between them, the specific challenges of construction funding and how these facilities can potentially support companies taking on larger projects.

Why Cash Flow Is a Major Challenge for Construction Businesses

Construction companies often operate with significant expenditure before receiving the corresponding customer payments.

Unlike businesses that receive payment immediately when a product is sold, construction contractors may work under staged payment arrangements.

These can involve:

• Applications for payment
• Interim valuations
• Payment notices
• Contractual payment dates
• Retentions
• Final accounts
• Disputed variations
• Extended customer payment terms

Meanwhile, the contractor still needs to pay for the resources required to deliver the work.

These costs might include:

• Building materials
• Subcontractors
• Employees and site labour
• Plant and equipment hire
• Fuel and transport
• Insurance
• Site accommodation
• Waste removal
• Temporary works
• Project management
• General business overheads

The timing of these payments can create a substantial gap between expenditure and income.

A construction company can have a healthy order book and profitable contracts while still experiencing significant cash-flow pressure.

Commercial funding can potentially help manage that gap.

Example: A Building Contractor Wins a £1 Million Contract

Imagine an established construction company wins a new commercial building contract worth:

£1 million.

Before receiving its first substantial customer payment, the business expects to incur:

Initial expenditure	Amount
Building materials	£100,000
Labour	£75,000
Subcontractors	£65,000
Plant hire and equipment	£30,000
Site setup and logistics	£20,000
Working-capital contingency	£10,000
Total initial requirement	£300,000

The company may have a profitable contract, but it still needs £300,000 of available cash to support the initial stages.

If its existing reserves are tied up in other projects, securing the contract could create a significant funding requirement.

A Revolving Credit Facility might potentially help with expenditure before invoices are raised.

Invoice Finance could potentially release funds from eligible outstanding invoices once the relevant work has been completed, invoiced and accepted under the lender's criteria.

These products serve different purposes, and understanding that distinction is particularly important in construction.

1. What Is Invoice Finance for Construction Companies?

Invoice Finance is a form of commercial funding that allows eligible businesses to access a proportion of the value of outstanding customer invoices before those invoices are paid.

Instead of waiting for a customer to settle an invoice under the agreed payment terms, a business may be able to access funding earlier.

This can reduce the amount of working capital tied up in unpaid invoices.

How Does Construction Invoice Finance Work?

A typical arrangement may operate as follows:

1. The contractor completes eligible work.
2. The relevant contractual valuation or payment process is completed.
3. An eligible invoice or receivable is established.
4. The invoice is submitted to the finance provider.
5. The lender advances an agreed proportion of its eligible value.
6. The customer pays in accordance with the collection arrangements.
7. Any remaining balance is released after applicable charges and adjustments.

The precise process depends on the lender, contract and Invoice Finance structure.

Importantly, construction invoices can be more complicated to finance than ordinary commercial invoices.

An application for payment is not necessarily an eligible invoice, and a certified valuation does not automatically guarantee funding.

Lenders may need to establish that the debt is sufficiently certain, undisputed, assignable and collectable.

2. Example: Releasing Cash from £250,000 of Construction Invoices

Imagine a construction company has completed work for several commercial customers.

It has:

£250,000 of outstanding invoices.

For illustration, assume a lender agrees to advance 80% against invoices it considers eligible.

The potential initial advance would be:

£200,000.

The remaining £50,000 would be subject to the facility's settlement arrangements, reserves, fees and adjustments.

Rather than waiting for all customers to settle their invoices, the contractor could potentially access funding earlier.

This might help the company:

• Pay subcontractors
• Purchase materials
• Meet payroll
• Mobilise another project
• Reduce pressure on existing cash reserves

However, the 80% figure is illustrative. Actual advance rates and availability depend on the lender and the underlying invoices.

Retentions, disputes, set-off rights and other contractual issues may reduce the amount eligible for funding.

3. Why Construction Invoice Finance Is Different

One of the most important considerations for construction companies is that not every Invoice Finance lender will fund construction-related receivables.

Construction contracts frequently contain features that create additional risks for lenders.

These include:

Applications for Payment

Contractors may submit applications for payment based on work completed.

However, an application is not necessarily the same as an unconditional debt owed by the customer.

The contractual payment process may need to progress further before the receivable becomes eligible.

Interim Valuations

Payments may depend on the valuation of completed works.

If the value is disputed or subject to adjustment, the lender may be unwilling to advance against the full amount.

Retentions

A customer may retain a percentage of the contract value until specified contractual conditions are satisfied.

Retained amounts may not be eligible for standard Invoice Finance.

Set-Off and Contra Charges

A customer may have contractual rights to deduct certain amounts from sums otherwise payable.

These rights can affect the collectability and eligibility of invoices.

Disputed Work

If the customer disputes the quality, quantity or value of work, the associated receivable may become ineligible.

Contractual Restrictions

Some contracts contain restrictions or other provisions affecting the assignment of receivables.

The lender may need to review the relevant contractual arrangements.

For these reasons, construction Invoice Finance often requires specialist lender consideration.

At Principal Business Finance, we can explore funding options through lenders whose criteria may accommodate suitable construction-related receivables.

4. Which Construction Businesses Could Potentially Use Invoice Finance?

Depending on the lender and contractual arrangements, Invoice Finance may be relevant to businesses such as:

• General building contractors
• Commercial construction companies
• Groundworks contractors
• Civil engineering businesses
• Mechanical and electrical contractors
• Plumbing and heating contractors
• Roofing companies
• Scaffolding contractors
• Drylining and partitioning companies
• Flooring contractors
• Painting and decorating contractors
• Facilities maintenance companies
• Construction labour suppliers
• Specialist subcontractors

Eligibility depends on the actual invoices and contractual arrangements, not simply the business's sector.

For example, a maintenance company invoicing commercial customers for completed, undisputed services may have a different funding profile from a contractor seeking an advance against uncertified construction applications.

5. Invoice Factoring vs Invoice Discounting for Builders

There are several Invoice Finance structures.

Two commonly used arrangements are Invoice Factoring and Invoice Discounting.

Invoice Factoring

Under a typical factoring arrangement, the finance provider advances funds against eligible invoices and manages the collection process.

This may include contacting customers and chasing overdue payments.

Factoring can potentially suit businesses that want to outsource some credit-control responsibilities.

However, the customer will generally be aware of the arrangement.

Invoice Discounting

Under a typical Invoice Discounting arrangement, the contractor retains responsibility for managing its sales ledger and collecting customer payments, subject to the lender's controls.

Some facilities may operate confidentially, depending on the lender and structure.

Invoice Discounting may be relevant to established construction businesses with suitable credit-control systems and a sufficiently robust sales ledger.

Selective Invoice Finance

Some lenders may offer facilities against invoices from selected customers rather than the entire sales ledger.

For example, a contractor may have several customers paying within 14 days and one major commercial client paying on 60-day terms.

The business might only want to finance eligible invoices from the longer-paying customer.

The availability of selective arrangements depends on lender criteria, invoice values and the underlying contracts.

6. What Is a Revolving Credit Facility for Construction Businesses?

A Revolving Credit Facility (RCF) provides a business with access to an agreed funding limit.

Subject to the facility terms, the business can draw funds when required, repay amounts borrowed and potentially draw available funds again.

Unlike a conventional Business Loan, where a fixed amount is usually advanced upfront, an RCF can provide flexibility over when funds are used.

For construction businesses, this can be particularly relevant because working-capital requirements often fluctuate throughout the project lifecycle.

A contractor might need £100,000 for materials in January, receive a substantial payment in March and require another £150,000 to mobilise a new project in April.

An RCF could potentially help manage these changes.

7. Example: £350,000 Construction Revolving Credit Facility

Imagine an established building contractor has an approved:

£350,000 Revolving Credit Facility.

Its funding requirements change throughout the year.

January: The company draws £150,000 to fund materials and subcontractors for a new contract.

March: Customer payments arrive, allowing the company to repay £100,000.

April: The contractor wins another project and requires £175,000 for mobilisation.

Subject to the available facility balance and terms, it could draw additional funds.

June: Further project receipts allow the company to reduce its outstanding balance again.

The facility can potentially provide reusable working capital as expenditure and income fluctuate.

RCF interest, fees, repayment obligations, drawdown conditions and renewal arrangements vary between lenders.

Some facilities charge interest on drawn funds, while others may also charge fees for making the facility available.

8. Why RCFs Can Be Particularly Relevant to Construction

Construction expenditure is rarely consistent from one month to the next.

A company may have relatively modest requirements during one period and substantial costs during another.

RCFs can potentially support:

• Materials purchases
• Labour and payroll
• Subcontractor payments
• Site mobilisation
• Fuel and transport
• Plant hire
• Insurance and overheads
• Temporary cash-flow gaps
• Multiple simultaneous projects
• Seasonal working-capital requirements

The ability to draw and repay funds can be useful for businesses whose expenditure is linked to project schedules.

However, an RCF remains borrowing and must be managed within the facility's repayment and affordability requirements.

9. Invoice Finance vs RCF: What's the Difference?

Although both facilities can support construction cash flow, they operate differently.

Feature	Invoice Finance	Revolving Credit Facility
Funding basis	Eligible outstanding invoices	Agreed credit limit
Access to funds	Generally once eligible receivables exist	Subject to available facility limit
Typical use	Release cash from unpaid invoices	Fund fluctuating working-capital requirements
Before work is invoiced	Generally not available	Potentially available
Funding growth	May increase with eligible invoiced turnover	Subject to agreed limit
Customer involvement	Depends on facility structure	Usually not linked to individual invoice collections
Construction-specific considerations	Valuations, retentions, disputes and contractual terms	Affordability, facility conditions and repayment capacity

The main difference is the stage at which funding becomes available.

Invoice Finance generally supports eligible work that has already generated an acceptable receivable.

An RCF may provide funding before that stage, including when a contractor needs to purchase materials and mobilise a site.

For construction businesses, both stages can create significant cash requirements.

10. Can Construction Companies Use Invoice Finance and an RCF Together?

Potentially, yes.

Some contractors may have both:

• Eligible unpaid invoices
• Working-capital requirements arising before new invoices are raised

Invoice Finance could potentially support the first requirement.

An RCF could potentially support the second.

Example: Combining Invoice Finance and an RCF

Imagine a building contractor has:

£500,000 of eligible outstanding invoices.

For illustration, assume an Invoice Finance lender agrees an 80% advance rate.

The potential initial advance would be:

£400,000, before applicable reserves, fees and adjustments.

Meanwhile, the contractor wins another project requiring:

£200,000 of initial expenditure.

A separate RCF could potentially help fund mobilisation before the new project generates eligible invoices.

However, lenders will need to consider security arrangements, existing debentures, assignments of receivables and restrictions on additional borrowing.

Not every lender will permit both facilities to operate together.

The same receivables cannot simply be pledged independently to multiple lenders without the necessary arrangements and permissions.

Principal Business Finance can explore whether a compatible funding structure is available.

11. Funding Materials Before Project Payments Arrive

Materials are a major expenditure for many construction companies.

Depending on the project, contractors may need to purchase:

• Bricks and blocks
• Concrete
• Steel
• Timber
• Roofing materials
• Insulation
• Electrical supplies
• Plumbing materials
• Plasterboard
• Aggregates
• Drainage products
• Specialist construction components

Suppliers may require payment before the contractor receives the corresponding customer funds.

Example: £200,000 Materials Requirement

A commercial building contractor wins a new project.

It needs:

£75,000 steel

£50,000 concrete and aggregates

£40,000 timber and structural materials

£35,000 other building supplies

Total:

£200,000.

The contractor expects payment through agreed project stages, but the materials must be purchased earlier.

An RCF could potentially help fund the expenditure before eligible invoices are generated.

Invoice Finance may subsequently support suitable receivables once the relevant work has been completed and the lender's requirements are met.

12. Funding Subcontractors and Labour

Labour and subcontractor costs are another major working-capital requirement.

A contractor may need to pay:

• Groundworkers
• Electricians
• Plumbers
• Carpenters
• Bricklayers
• Roofers
• Plasterers
• Machine operators
• Site supervisors
• Specialist subcontractors

The company may be required to pay these costs before receiving payment from the main contractor or end customer.

Example: £100,000 Monthly Labour Requirement

Imagine a construction company incurs:

£100,000 per month in labour and subcontractor costs.

Its customer payment cycle means it regularly has two months of expenditure outstanding before corresponding receipts arrive.

That could create a substantial working-capital requirement.

An RCF may potentially help manage the timing gap.

Invoice Finance may release cash against suitable outstanding invoices.

The appropriate facility will depend on the nature of the contracts, invoicing arrangements and overall cash-flow position.

13. Funding Multiple Construction Projects Simultaneously

One of the biggest challenges for growing construction businesses is managing several projects at once.

Imagine a building contractor has three new contracts.

Project A: £150,000 initial working capital.

Project B: £200,000 initial working capital.

Project C: £250,000 initial working capital.

Combined initial requirement:

£600,000.

Each project may be profitable.

However, the business still needs enough cash to mobilise all three.

A suitable RCF could potentially help fund expenditure across the projects.

Invoice Finance could potentially release cash from eligible invoices generated by existing work.

Together, compatible facilities may help the contractor manage its project pipeline without relying entirely on existing cash reserves.

14. How Delayed Payments Affect Construction Companies

Delayed payments can have a significant impact on construction businesses.

A contractor may complete work and submit its payment application, but the actual cash receipt can occur later.

During that period, the business still needs to pay its employees, suppliers and finance commitments.

Late payments can create a chain reaction.

For example:

1. A main contractor delays payment to a subcontractor.
2. The subcontractor experiences reduced available cash.
3. The subcontractor still needs to pay employees and suppliers.
4. The business may struggle to fund its next project.

Suitable working-capital facilities can potentially reduce some of the pressure created by payment timing.

However, Invoice Finance does not automatically eliminate customer credit risk, and an RCF does not remove the obligation to repay borrowing.

Accurate forecasting, credit control and contract management remain important.

15. Construction Retentions and Cash Flow

Retentions are a common feature of construction contracts.

A percentage of the contract value may be withheld until specified contractual conditions are satisfied.

For example, a contractor might complete a £1 million project with a contractual retention arrangement.

If 5% is retained, that represents:

£50,000 withheld, subject to the contract's specific provisions and release arrangements.

The business may have completed the relevant work but still be waiting to receive that amount.

Retentions can therefore tie up working capital for extended periods.

However, retained sums are not automatically eligible for Invoice Finance.

Specialist lender criteria will determine whether any part of the relevant receivable can be funded.

An RCF might potentially provide separate working-capital support, subject to affordability and lender requirements.

16. Funding Larger Contracts and Framework Agreements

Construction businesses often reach a point where they begin tendering for larger projects.

A company that historically completed £250,000 contracts may begin winning projects worth £1 million or £2 million.

This can significantly increase the amount of working capital required.

Example: A £2 Million Construction Contract

Imagine a contractor secures a:

£2 million project.

Its initial funding requirements include:

Expenditure	Amount
Materials	£150,000
Labour	£125,000
Subcontractors	£100,000
Plant hire and transport	£50,000
Site mobilisation	£25,000
Working-capital buffer	£50,000
Total	£500,000

The company may need £500,000 before receiving substantial project payments.

An RCF could potentially help support mobilisation.

Invoice Finance may become relevant as eligible receivables arise during the contract.

Lenders may examine the contractor's experience, order book, financial performance, contract terms and ability to repay.

17. Construction Cash Flow During Seasonal Changes

Construction activity can fluctuate throughout the year.

Weather conditions, project schedules and customer demand may affect the timing of work.

For some businesses, winter can create operational challenges.

For others, the busiest periods may involve several major projects running simultaneously.

An RCF may potentially help manage temporary changes in working-capital requirements.

Invoice Finance may provide additional liquidity where suitable invoices are outstanding.

However, facilities must remain affordable during quieter periods as well as during peak trading.

18. Invoice Finance for Construction Subcontractors

Subcontractors can face particular cash-flow challenges.

They may be responsible for paying their own employees, suppliers and subcontractors while waiting for payments from a main contractor.

This can affect businesses such as:

• Electrical contractors
• Mechanical contractors
• Groundworks companies
• Roofing businesses
• Scaffolding contractors
• Drylining companies
• Flooring contractors
• Specialist installation businesses

A subcontractor may have completed significant work but still be awaiting certification or payment.

For eligible receivables, specialist Invoice Finance could potentially release funds earlier.

An RCF may provide additional flexibility for expenditure that arises before invoices become eligible.

19. Invoice Finance for Maintenance and Facilities Contractors

Not all construction-related businesses operate under complex building contracts.

Some companies provide ongoing maintenance and facilities services.

These might include:

• Planned maintenance
• Reactive maintenance
• Commercial property repairs
• Electrical maintenance
• Plumbing and heating services
• Building refurbishment
• Facilities management

Where the company raises standard invoices for completed, undisputed services, Invoice Finance may be more straightforward than for certain construction contracts involving retentions and staged valuations.

The lender will still assess the customers, invoices and contractual arrangements.

20. Funding Construction Business Expansion

Working-capital funding can support more than existing contracts.

A growing construction company may want to:

• Recruit additional employees
• Expand into new regions
• Establish new divisions
• Tender for larger contracts
• Invest in technology
• Increase its subcontractor network
• Develop supplier relationships
• Strengthen working-capital reserves

An RCF may potentially help support fluctuating operational expenditure during expansion.

Invoice Finance may help release cash from eligible receivables as the business generates additional invoiced turnover.

A separate Business Loan may also be relevant for a defined investment programme.

21. Example: £1 Million Construction Business Growth Plan

Imagine an established building contractor plans to increase its annual turnover and take on additional commercial projects.

Its projected requirements include:

Funding requirement	Amount
Materials and stock	£300,000
Labour and subcontractors	£250,000
Site mobilisation	£150,000
Recruitment and staffing	£100,000
Technology and systems	£50,000
Working-capital contingency	£150,000
Total	£1,000,000

Potential funding options could include:

RCF: Supporting materials, payroll, subcontractors and site mobilisation.

Invoice Finance: Potentially releasing cash from eligible outstanding customer invoices.

Business Loan: Potentially supporting defined expansion costs.

The available structure would depend on the company's financial position, existing borrowing and lender criteria.

22. Example: £3 Million Construction Company Expansion

Now consider a larger construction company planning substantial growth.

Its requirements include:

£750,000 materials

£700,000 labour and subcontractors

£500,000 contract mobilisation

£300,000 recruitment

£250,000 technology and operational development

£500,000 working capital

Total:

£3 million.

The company could potentially explore a combination of:

• Invoice Finance
• Revolving Credit Facilities
• Business Loans
• Asset Finance for eligible equipment
• Equipment Refinance against suitable existing machinery

A combination of products may be relevant where different parts of the expansion require different funding structures.

23. Can New Construction Companies Obtain Invoice Finance or RCF Funding?

Newly established construction businesses may potentially access commercial finance, although lender options can be more limited.

For Invoice Finance, the nature and quality of eligible customer invoices may be particularly important.

For RCFs, lenders may place greater emphasis on:

• Trading history
• Bank statements
• Credit profile
• Director experience
• Existing contracts
• Financial forecasts
• Affordability
• Available security

A newly incorporated contractor led by experienced directors may have different funding options from a business with no trading history or confirmed workload.

Availability will depend on the individual circumstances.

24. What Information Will Construction Finance Lenders Require?

For an established construction business, lenders may request:

• Latest annual accounts
• Recent business bank statements
• Management accounts
• Details of existing borrowing
• Funding amount and purpose
• Director information
• Current order book
• Cash-flow forecasts

For Invoice Finance, additional information may include:

• Aged debtor reports
• Customer details
• Sample invoices
• Contract terms
• Payment applications
• Payment notices or certifications
• Retention arrangements
• Dispute history
• Customer concentration

For RCF applications, lenders may focus on the company's overall financial performance, working-capital cycle and repayment capacity.

The exact information required will depend on the provider.

25. How Principal Business Finance Can Help Construction and Building Companies

At Principal Business Finance, we work with a wide panel of commercial lenders to help UK businesses explore funding for working capital, growth and investment.

We understand that construction companies can have complex cash-flow requirements.

A small subcontractor might need £50,000 to support materials and labour.

An established building contractor may require £250,000 to mobilise several projects.

A larger construction company could need £1 million or more to support its order book.

We can help explore funding options including:

Invoice Finance

Potentially releasing cash from eligible outstanding customer invoices.

Invoice Factoring

Potentially providing funding against eligible invoices alongside credit-control services.

Invoice Discounting

Potentially releasing funds against eligible invoices while the business retains responsibility for customer collections.

Selective Invoice Finance

Potentially funding invoices from selected customers, subject to lender criteria.

Revolving Credit Facilities

Providing flexible access to working capital for materials, labour, subcontractors and contract mobilisation.

Business Loans

For working capital, expansion, recruitment and other eligible expenditure.

Asset Finance and Hire Purchase

For suitable machinery, vehicles and equipment.

Equipment Refinance

Potentially releasing capital tied up in suitable existing business assets.

Commercial Mortgages

For eligible commercial premises, workshops and depots.

Our team can discuss the funding requirement, review the available information and approach suitable lenders from our panel.

26. Why Cash-Flow Forecasting Matters for Construction Businesses

Construction businesses can benefit from understanding expected cash movements across all active projects.

Important figures may include:

• Expected customer payments
• Outstanding invoices
• Payment applications
• Materials expenditure
• Subcontractor commitments
• Payroll
• Retentions
• Plant hire
• Finance repayments
• Project mobilisation costs

A rolling cash-flow forecast can help identify periods when expenditure is expected to exceed receipts.

It can also help demonstrate to lenders how a proposed facility may be used and repaid.

27. Funding Construction Growth Without Waiting for Every Customer Payment

Construction is an industry where growth often requires substantial expenditure.

More contracts can mean more materials.

Larger projects may require additional subcontractors.

New sites create mobilisation costs.

And delayed payments can leave significant amounts of money tied up in outstanding receivables.

Invoice Finance and Revolving Credit Facilities can potentially help construction companies manage these requirements without relying entirely on existing cash reserves.

Invoice Finance may release funds from eligible outstanding invoices.

An RCF may provide working capital before those invoices arise and as project expenditure changes.

For some businesses, one facility may be sufficient.

For others, a compatible combination of funding products may be relevant.

The appropriate arrangement will depend on the contractor's financial position, contracts, customer base and funding requirements.

Looking for Construction Business Finance?

Whether you're a building contractor, specialist subcontractor, groundworks business, civil engineering company or maintenance provider, Principal Business Finance can help explore the available funding options.

We work with a wide panel of commercial lenders and can arrange funding for eligible UK construction businesses.

If you're looking to fund materials, pay subcontractors, mobilise new contracts or release cash from eligible outstanding invoices, contact our team to discuss your requirements.

Principal Business Finance: Business funding with a human touch.

https://principalbusinessfinance.co.uk/

All finance is subject to application, status, lender criteria and approval. Security and/or personal guarantees may be required. All financial examples are illustrative and do not represent guaranteed funding, revenue, profitability or outcomes.