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What documents are needed for a contractor mortgage?

13th February 2026

By Simon Carr

Securing a mortgage as a self-employed contractor in the UK can often be more complex than for traditional salaried employees. Lenders need assurance that your income is stable and sustainable, which requires specific documentation that proves your contracting history, day rate, and financial health.

Understanding what documents are needed for a contractor mortgage: A comprehensive UK guide

The documentation requirements for a contractor mortgage fall into three main categories: personal identification, general financial history, and specific evidence of your contracting income and stability. While requirements can vary between specialist lenders, adhering to a core set of standards will help expedite your application.

Category 1: General Personal and Financial Documentation

These documents are standard for almost all mortgage applications, regardless of employment status. They establish who you are and where you live.

  • Proof of Identity: A valid passport or full UK driving licence is typically required.
  • Proof of Address: Recent utility bills, bank statements, or council tax bills dated within the last three months.
  • Proof of Deposit: Documentation showing the source and availability of your deposit funds (e.g., savings statements, Gifted Deposit letters from family).
  • Personal Bank Statements: Usually covering the last three to six months, showing consistent income deposits and expenditure patterns.

Category 2: Essential Documents Proving Contracting Stability

Contractors typically do not rely solely on annual accounts or a P60 from a single employer. Instead, lenders focus on your ability to consistently secure and execute high-value contracts. This proves you are a reliable, high-earning professional.

Your Current and Historical Contracts

The core of your contractor mortgage application relies on the paperwork surrounding your assignments. You must demonstrate continuity of work.

  • Current Contract: A signed copy of your existing contract, clearly outlining the day rate (or fixed term fee), start date, expected end date, and clauses related to extensions. Lenders typically prefer contracts that have at least three to six months left to run at the time of application.
  • Contract History: Evidence of previous contracts, usually covering the last 12 to 24 months. This bridges any potential gaps and demonstrates your ability to move between assignments successfully.
  • Proof of Income Receipts: Invoices and matching bank statements showing the payments received from your current or most recent contracts.
  • Curriculum Vitae (CV): Although not strictly a financial document, many specialist lenders request your CV to understand your professional background, expertise, and the length of time you have been contracting in your specific field (e.g., IT, finance, engineering).

Lenders use these documents to calculate your affordability by converting your day rate into a hypothetical annual salary, typically by multiplying the day rate by a set number of working days per year (often 220 to 240 days), even if you claim fewer expenses than a traditional employee would.

Category 3: Specific Income Verification based on Business Structure

The exact financial evidence you need hinges entirely on how you operate your business—as a Limited Company or through an Umbrella Company.

If You Contract Through a Limited Company

If you own your own Limited Company (often known as a Personal Service Company), your income typically consists of a small salary and larger dividends. Lenders traditionally assessed affordability based solely on the salary and dividends you draw, which often undervalued your true earning potential. Fortunately, many specialist lenders now accept your gross contract value, but they still require official documentation:

  • Certified Business Accounts: Usually covering the last two to three full years. These must be prepared by a qualified, certified accountant (e.g., ACCA or ICAEW).
  • HMRC Tax Calculations (SA302s): These are summaries of your declared income, confirming the figures provided on your Self Assessment tax returns. Lenders often require SA302s for the last two or three tax years. You can access the official HMRC Self Assessment tax calculation directly through your Government Gateway account or via your accountant.
  • Company Bank Statements: Showing the flow of funds, particularly if your gross income is being used for the affordability assessment.
  • Evidence of Director’s Remuneration and Dividends: Although modern contracting mortgages focus on the gross contract rate, many lenders still want to see clear evidence of how you extract funds from the business.

If You Contract Through an Umbrella Company

Contractors working under an Umbrella Company are technically employees of that company, meaning their application process is often smoother and closer to a standard employed application, provided the contract is stable.

  • Recent Payslips: Payslips covering the last three to six months, showing consistent gross income payments from the Umbrella Company.
  • P60s: The most recent annual statement of pay and deductions, which proves your total earnings over the previous tax year.
  • Umbrella Company Contract: Your contract of employment with the Umbrella Company.

For Umbrella Company contractors, the key is proving that the income listed on the payslips is derived from continuous, high-value assignments, even if the employment itself is technically continuous.

The Importance of Your Credit Profile

Lenders will perform a detailed credit check to assess your financial reliability. A strong credit score, coupled with minimal existing debt, reassures them that you manage your financial commitments responsibly.

Ensure you check your credit report before applying to identify and rectify any errors or unexpected marks. Get your free credit search here. It’s free for 30 days and costs £14.99 per month thereafter if you don’t cancel it. You can cancel at anytime. (Ad)

Lenders will scrutinise your history for evidence of missed payments, county court judgements (CCJs), or defaults. A pristine credit history significantly increases your chances of securing the best mortgage rates available.

Working with a Specialist Broker

Because the documentation required for a contractor mortgage is highly specific and often requires interpretation of complex contract clauses, working with a specialist mortgage broker is highly recommended. A broker familiar with the contractor market understands which lenders accept day-rate calculations and how best to present your income structure to meet their compliance requirements.

A good broker can anticipate the lender’s questions regarding gaps between contracts, complex tax structures, or retained profits, helping you gather the precise documentation needed from the outset, saving significant time and reducing potential frustration.

People also asked

How long do I need to be contracting before applying for a mortgage?

While some specialist lenders may consider applicants with as little as 6 to 12 months of contract history if they have relevant professional experience, most mainstream lenders prefer to see a minimum of two years of continuous contract work documented through historical contracts and associated financial accounts or payslips.

Can a lender assess my income based solely on my day rate?

Yes, many specialist contractor mortgage providers use your day rate to determine affordability. They typically annualise your income by multiplying your day rate by an assumed working year (e.g., 48 weeks or 220 working days), disregarding the complexity of retained profits or dividends, which is highly beneficial for Limited Company directors.

What if I have had a gap between contracts?

Short gaps (typically up to six weeks) between contracts are often acceptable, provided you can demonstrate that the gap was intentional or quickly followed by a new assignment. Longer or frequent gaps may prompt the lender to request additional evidence, such as proof of professional indemnity insurance or a strong CV showing in-demand skills, to mitigate concerns about income instability.

Do I need an accountant to verify my limited company accounts?

Yes, for Limited Company contractors, lenders almost universally require that all business accounts submitted are certified and signed off by a qualified, professional UK accountant. This guarantees that the financial statements are accurate and comply with UK accounting standards.

Can I use retained profits in my limited company to prove affordability?

Traditional lenders only assess affordability based on the salary and dividends you have withdrawn. However, lenders offering dedicated contractor mortgages are typically more flexible, allowing the calculation of affordability based on the company’s gross contract revenue, effectively making use of retained profits without needing to withdraw them as taxable income.

Conclusion

Successfully navigating a contractor mortgage application requires meticulous preparation of specific financial and contractual documentation. By providing clear evidence of continuous contracts, stable day rates, and comprehensive financial records—whether through certified accounts (Limited Company) or detailed payslips (Umbrella Company)—you can effectively demonstrate to lenders that you possess the long-term income stability required for a substantial mortgage commitment.

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