The "4.5 times your salary" rule you've probably heard is the floor, not the ceiling. Here's what's actually available, and why most people never hear about it.
Most people go into house-hunting assuming lenders will offer roughly 4 to 4.5 times their annual income. That figure is real, and it's still what most high-street lenders default to — but it's not the only option, and depending on your circumstances and the property you're buying, it may not even be the best one available to you.
| Tier | Multiple | Typical requirement |
|---|---|---|
| Standard high-street | 4.0–4.5x | No special criteria — the default most lenders advertise |
| Enhanced | 5.0–5.5x | Higher income, often £75,000+ |
| First-time buyer boost | 5.5x, some to 6x | First-time buyer status, minimum income (e.g. £30k single / £50k joint), often paired with a 5% deposit |
| Professional / high-multiple | 6.0–6.5x | Qualifying professions (medicine, law, accountancy) or combined income above ~£150,000 |
Access to 6x+ has broadened noticeably through 2025–2026, with a growing number of lenders offering it to at least some borrowers — but eligibility criteria still vary sharply between them, and it's not a universal default. Always confirm current criteria with a whole-of-market broker.
Higher multiples usually come with tighter property restrictions attached. A first-time buyer boost product offering 5.5x income might explicitly exclude ex-local-authority flats, short leases, flats above commercial premises, or certain new-builds — precisely the property types where you might have thought the extra borrowing power would help most.
This is the nuance that's easy to miss when comparing headline numbers: the multiple you're quoted only matters if it actually applies to the property you're trying to buy.
The standard multiple is the fastest, most broadly applicable answer to quote first, so the other tiers don't always come up unless you know to ask about them — particularly ones involving more paperwork, a smaller panel of lenders, or products a specific broker handles less often. Asking your broker directly "which tiers am I eligible for, and which properties would that apply to" is a reasonable, direct question worth asking early.
Income multiple gets most of the attention, but lenders weigh your credit history heavily when deciding which tier to actually offer you — not just whether to approve you at all. A thin credit file, a missed payment from years ago, or an error you don't know is on your record can quietly push you from Enhanced or FTB Boost eligibility back down to the standard 4.0-4.5x tier, even with a strong income.
Worth checking your own file before you apply, not after a broker tells you why you didn't get the rate you expected. Checkmyfile combines your Experian, Equifax and TransUnion reports into one view — free for 7 days, then £14.99/month, cancel anytime.
Switch to Precise mode in Homabu's calculator to select a specific mortgage tier and see how property type affects what's actually available to you.
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