IT Contractor Mortgage: Inside vs Outside IR35

Quick answer: Yes, IT contractors can get a mortgage whether they work inside or outside IR35. Many lenders assess contractors on their day rate rather than accounts. Inside IR35, some lenders use umbrella or fee-payer payslips instead, which can produce a lower figure. Contract history, time left on the contract and how you are paid decide which lenders fit.

The article is updated as of Oct 24, 2026

IR35 is the set of off-payroll working rules that decides whether a contractor is taxed like an employee. Since April 2021, medium and large private-sector clients decide the status of the contractors they engage, as public-sector bodies already did. For a mortgage application, the question is less about tax and more about how your income will be evidenced.

What IR35 Means for Mortgage Lenders

Lenders want to see income that is regular and likely to continue. Outside IR35, many IT contractors invoice through their own limited company and take a mix of salary and dividends. Inside IR35, the client or agency deducts tax and National Insurance at source, often through an umbrella company or a fee-payer. Both can be mortgageable. What changes is the evidence the lender asks for and the figure it uses to assess affordability.

Outside IR35: How Your Income Is Usually Assessed

• Day rate: many contractor-friendly lenders annualise your day rate from the current contract rather than relying on accounts.
• Limited company figures: other lenders use salary plus dividends, or salary plus your share of company net profit, from accounts or SA302s.
• Contract evidence: a current contract, recent invoices and business bank statements are commonly requested.

Inside IR35: How Your Income Is Usually Assessed

• Day rate: some lenders still use the gross day rate in your contract, even though tax is deducted at source.
• Payslips: others use umbrella or fee-payer payslips, which show income after employer costs and any umbrella margin, so the figure can be noticeably lower.
• Employment-style checks: lenders may treat you more like an employee, checking payslips, P60s and the agency or umbrella contract.

Inside vs Outside IR35 at a Glance

The table below is a general guide. Every lender has its own criteria, so use it as a starting point rather than a decision.

Worked example

Priya is an IT contractor on £500 a day. A lender that annualises day rates over 46 weeks would treat her income as about £115,000 (£500 × 5 days × 46 weeks). A lender that uses her umbrella payslips instead might work from a much lower annual figure once employer costs and the umbrella margin are taken out. With an income multiple of 4.5 times, the difference between those two figures can change the maximum loan by a six-figure sum, before affordability checks and credit scoring. Same contractor, same contract, very different outcome depending on the lender.

Contract History, Gaps and Renewals

Lenders vary on how much contracting history they need. Some ask for 12 months, others accept less if you moved from a permanent role into contracting in the same field. Many also look at how long is left on your current contract and whether you have a record of renewals. Short gaps between contracts are common in IT and are usually acceptable when explained, but long or frequent gaps attract more questions.

Documents to Prepare

• Current contract, plus previous contracts if you have recently renewed or moved
• CV or a summary of your contracting and employment history
• Three to six months of bank statements, business and personal where relevant
• Umbrella or fee-payer payslips and P60 if you work inside IR35
• Company accounts or SA302s and tax year overviews if a lender assesses limited company income

For more on how contractors are assessed, see our guides to mortgages for new contractors and mortgages when working for an umbrella company.

Frequently Asked Questions

Can I get a mortgage if I work inside IR35?

Yes. Lenders will consider contractors working inside IR35. Some assess you on your contract day rate, others on your umbrella or fee-payer payslips. Which method a lender uses can change how much it will lend, so it matters where the application goes.

How do lenders calculate a contractor’s income?

Many contractor-friendly lenders annualise the day rate, commonly by multiplying it by five days a week and 46 or 48 weeks a year. Other lenders use company accounts, SA302s or payslips instead, depending on how you are paid.

How long do I need to have been contracting?

It varies by lender. Some ask for 12 months of contracting history, while others will consider less if you moved from employment into contracting in the same line of work. Time left on your current contract is usually checked too.

Does working through a limited company change how I am assessed?

It can. Outside IR35 contractors paid through their own limited company may be assessed on the day rate, or on salary plus dividends or share of company profit. Lenders differ, so the same income can produce different results.

What happens if my IR35 status changes during the application?

Tell your broker straight away. A move inside or outside IR35 can change how your income is evidenced, and the lender may need updated contracts or payslips before it issues or confirms a mortgage offer.

Related Mortgage Guides

• Mortgages for new contractors
• Mortgages when working for an umbrella company
• Mortgages for company directors
• Our guide to self-employed mortgages
• Mortgage and property advice hub
• Needing Advice home

This guide is reviewed by Damian Youell CeMAP, Senior Mortgage Broker. Meet the rest of our team, including Romany Youell.

Your home may be repossessed if you do not keep up repayments on your mortgage. Needing Advice is an independent, FCA-regulated mortgage broker. There is no obligation to proceed.