FCA Mortgage Rule Review 2026 - What It Means for Borrowers With Complex Income

Most borrowers only ever notice mortgage rules once they've already been turned down by them. Right now, though, there's a genuinely significant change working its way through the system — and it could reshape who gets approved for a mortgage over the next year or two.

What's Actually Being Proposed

The Financial Conduct Authority has opened a consultation, known as CP26/18, looking at how mortgage affordability is assessed. Rather than tightening the rules, this one goes the other way — it proposes giving lenders more flexibility to look at a borrower's "full and current" financial picture, instead of forcing every application through the same rigid template.

The areas under review include interest-only and part-and-part mortgages, retirement interest-only lending, variable and irregular income, foreign currency income, credit-impaired borrowers, and bridging finance. In plain terms: the regulator has noticed that fewer and fewer borrowers fit the old "steady salary, clean credit file" mould, and it wants lending rules that can keep up.

Who Stands to Benefit

This matters most for people whose income doesn't arrive in one neat monthly payslip. Self-employed applicants, those paid through bonuses, dividends or commission, business owners who leave profits inside their company, and older borrowers working past traditional retirement age have historically struggled to fit standard affordability checks — even when they can clearly afford the borrowing. If adopted, these changes could mean fewer good applicants being declined simply because their income doesn't look "normal" on paper.

What Hasn't Changed

It's worth being clear about what this isn't. Responsible lending and affordability checks aren't going away — the FCA has been explicit that this is about recalibrating how affordability is judged, not loosening the underlying discipline. Nothing here allows lenders to hand out mortgages that borrowers genuinely can't afford; it simply widens the lens through which "afford" gets measured.

Timeline: What Happens Next

The consultation closes on 28 July 2026, with the FCA expecting to publish final rules in a policy statement later in the year. Nothing changes overnight — individual lenders will then decide, at their own pace, how far to apply any new flexibility once it's confirmed. Some may embrace it quickly; others will move more cautiously.

The Takeaway

If your income has ever felt too complicated for a mainstream lender's tick-box form, this is worth watching closely over the coming months. Nothing has changed yet, and current lending criteria remain fully in force — but the direction of travel is encouraging. In the meantime, specialist lenders already take a more flexible view than many borrowers realise, so it's worth getting proper advice now rather than waiting to see how the rules land.