5-year fixed buy-to-let rates, engineered around the stress test.
The term that unlocks maximum day-one borrowing on a new acquisition. Best-buy 5-year fixed BTL purchase rates, re-ranked every night from 40+ lender product books.
| Lender | Initial rate | Monthly | Fixed until | Then | Product fee | |
|---|---|---|---|---|---|---|
| 1 N NatWest GroupBest rate | 4.32% | £720on £200,000 int-only | 5 yrs | 6.74% | £5,999Free valuation | See full deal → |
| 2 H HSBC Bank | 4.48% | £747on £200,000 int-only | Oct 2031 | 7.25% | £3,999Free valuation | See full deal → |
| 3 S Santander UK | 4.59% | £765on £200,000 int-only | Oct 2031 | 6.50% | £1,749 | See full deal → |
| 4 H HSBC Bank | 4.77% | £795on £200,000 int-only | Oct 2031 | 7.25% | NoneFree valuation | See full deal → |
| 5 S Santander UK | 4.85% | £808on £200,000 int-only | Oct 2031 | 6.50% | None | See full deal → |
Monthly payments illustrated on a £200,000 interest-only; fees not added to the loan. Rates shown are for comparison — full lender criteria apply.
The structural case for a 5-year BTL fix on a purchase is largely about the ICR stress test rather than rate certainty. Most lenders assess rental cover on a 5-year fix at or near the actual pay rate — the same interest rate you’ll pay — whereas shorter terms are tested at a higher notional rate. On a property where rental yield is modest or the loan is large, that difference can mean the 5-year fix unlocks the full loan you need while a 2-year fix at a nominally lower rate does not pass the income test. Certainty and borrowing capacity pull in the same direction here.
The fee arithmetic on 5-year products deserves particular attention. Percentage fees of 2–3% are common on the most competitive BTL rates, and on a £200,000 loan that’s £4,000–£6,000 upfront. Spread over five years that cost may still leave the low-rate, high-fee deal ahead — but the maths changes significantly at smaller loan sizes. The table surfaces effective rates accounting for fees; always use those rather than the headline rate when comparing across products with different fee structures.
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