Day Rate vs PAYE Assessment — Why It Matters So Much
The single most important factor for an IT contractor applying for a remortgage is whether the lender assesses income on a day rate or through the standard self-employed route. Lenders using day rate assessment will take your current contract day rate, multiply it by a standard number of working days per year (typically 46 to 48 weeks), and use the resulting annualised figure as your income for affordability purposes. This approach accurately reflects what experienced contractors actually earn over a working year, including sensible allowance for time between contracts.
The self-employed route, by contrast, uses the net profit from your limited company accounts or your share of partnership profit — whichever applies. For many IT contractors who have structured their affairs tax-efficiently by retaining profit in their company or drawing primarily in dividends, the accountant-approved salary figure used for tax purposes is far lower than their actual earning power. Lenders using self-employed assessment will base your mortgage on those lower declared figures, dramatically reducing what you can borrow.
The number of lenders offering genuine contractor day rate assessment has grown over the past decade, partly in response to the rise of contracting and partly because specialist broker channels have pushed lenders to develop appropriate products. However, not all lenders with a "contractor" product use true day rate assessment — some label products as contractor-friendly while still applying self-employed criteria. An experienced broker will know which lenders are genuinely contractor-positive and which are not.
For contractors currently inside IR35, income reaches them via PAYE through the fee payer, which means standard payslips and P60s are available. This can actually simplify the mortgage process, though lenders will need to understand that the employer on your payslip is an umbrella company or agency rather than a direct employer. Outside IR35 contractors operating through a personal service company will need the full day rate assessment route.
IR35 Status, Umbrella Companies and Limited Company Contracting
The IR35 reforms of 2017 (public sector) and 2021 (private sector) changed how many IT contractors operate, and those changes have rippled through to the mortgage market. Inside IR35 contractors are treated as deemed employees for tax purposes, with their income taxed at source through the fee payer — often an umbrella company. Outside IR35 contractors continue to operate through their own personal service company (PSC), paying corporation tax and drawing a mix of salary and dividends.
For umbrella company workers inside IR35, the income evidencing process is broadly similar to PAYE employment: you will have payslips from the umbrella company and a P60 at year end. However, umbrella gross pay may include the employer's National Insurance and the umbrella margin in the headline day rate figure, so lenders need to understand that the net pay is the relevant figure. An experienced broker will ensure the lender understands umbrella pay structures so your income is not misinterpreted.
Outside IR35 contractors operating through a limited company face the more complex assessment. The most contractor-friendly lenders will use the day rate annualisation approach regardless of how you draw money from your company. Some will require a minimum contracting history — typically 12 months, though some will accept as little as six — and want to see a current contract in force, or at minimum evidence of ongoing contracting activity. A renewed or extended contract close to the date of application strengthens the picture significantly.
Contract gaps are a common point of concern for lenders assessing IT contractor income. In reality, experienced contractors often take short breaks between engagements deliberately — for upskilling, travel, or simply because they can afford to. A specialist broker will help you present gaps in context, supported by evidence of consistent contracting history over time, so they do not derail an otherwise strong application.
