Commission income can be used for mortgage affordability, but lenders usually want to see that it is stable and sustainable. Because commission can fluctuate, most lenders won’t simply take the latest month and annualise it. Instead, they look for a track record and apply a conservative calculation.
Many lenders will request:
- Two to three years of income evidence (often P60s, payslips, and sometimes employer confirmation).
- An average of commission over the period, or a percentage to allow for variability.
- Additional scrutiny if commission is the majority of your income.
If your commission pattern is irregular (for example, large quarterly spikes), the lender may still accept it, but the application needs to show why the pattern is normal for your role and how it holds up over time. Recent job changes, probation periods, or changes in commission structure can make things more complex because the lender has less historic data to rely on.
High net worth underwriting can help if your overall financial position is strong, but lenders still need a credible basis for ongoing affordability. The most effective approach is to present clear evidence and choose lenders known to treat commission fairly rather than defaulting to basic-salary-only calculations.
Hearthstone Mortgages (trading name of Hearthstone Advisory Limited)
Tel: 01753 463391 | Email: enquiries@hearthstonemortgages.co.uk
Registered office: Europa House, Marsham Way, Gerrards Cross, Buckinghamshire, SL9 8BQ
Company No: 10563329 | FCA FRN: 945282
Warnings:
THINK CAREFULLY BEFORE SECURING DEBTS AGAINST YOUR HOME OR PROPERTY.
Your home or property may be repossessed if you do not keep up repayments on your mortgage.
We are a credit broker, not a lender. We may receive commissions that will vary depending on the lender, product or other permissible factors. The nature of any commission model will be confirmed to you before you proceed.