Remortgage Complex Income FAQ
General information only. This is not financial advice.
Last reviewed: 2026-06-06
Should I do a product transfer or remortgage if I have complex income?
A product transfer means switching to a new rate with your existing lender — usually without a full affordability reassessment. For complex income borrowers, this is often the path of least resistance because your income is already on file. A remortgage to a new lender triggers a full new assessment (updated accounts, SA302s, contracts), which may produce a better rate but also carries the risk of failing new criteria if your income has changed. The right choice depends on whether your current income can support a new lender's underwriting and whether the rate saving justifies the process.
When should I start the remortgage process if I'm self-employed?
Start 3–6 months before your deal expires. For self-employed borrowers, gathering up-to-date SA302s and accounts can take 4–6 weeks. Many lenders allow you to lock in a rate 3–6 months early, protecting against rate rises while preserving the option to switch if rates fall. Starting late risks falling onto the SVR (Standard Variable Rate), which is typically 1–4 percentage points above the base rate and can cost significantly more per month.
What if my latest accounts show lower profit than when I first applied?
Your options narrow but do not disappear. Some lenders average 2–3 years of accounts; others use the lowest year. Specialist lenders may accept a clear explanation for a temporary income dip — a sabbatical, deliberate reinvestment, or a specific one-off event. A product transfer with your existing lender is often the safest fallback if you cannot meet new lender criteria. A broker can show you which lenders are most sympathetic to income variability and whether averaging or supplementary evidence helps your case.
What documents are needed to remortgage with complex income?
Typically: 2–3 years of SA302 tax calculations and tax year overviews from HMRC; 2–3 years of company accounts (for directors); 3–6 months of personal and business bank statements; a current contract if you are a contractor; and details of any additional income streams (rental, investment, maintenance received). Some lenders require an accountant's reference. Accounts should ideally be less than 18 months old — older accounts may be rejected by some lenders.
Can a contractor remortgage using their day rate instead of accounts?
Yes. Specialist lenders will assess contractor remortgages on an annualised day rate (Day Rate × 5 days × 46 weeks) rather than company accounts. This is valuable for contractors who draw a low salary and minimal dividends for tax efficiency — accounts-based assessments dramatically understate their true income. You will need a current contract and typically at least 12 months of contracting history. A broker experienced with contractor mortgages will identify which lenders accept day-rate assessment for remortgage applications.
What is SVR risk for self-employed borrowers?
SVR (Standard Variable Rate) is the lender's default rate once your fixed or tracker deal expires. It is typically 1–4 percentage points above the Bank of England base rate and can change at any time. Self-employed borrowers who procrastinate on remortgaging risk falling onto the SVR — particularly expensive because they may already be on a higher rate than employed borrowers. The danger is compounded if recent accounts show reduced income: you may find your only option is a product transfer at whatever rate your current lender offers, rather than benefiting from whole-of-market competition.
Risk warning
Your home may be repossessed if you do not keep up repayments on your mortgage. Think carefully about the costs of remortgaging, including any early repayment charges on your current deal.
Explore further