Buy to let mortgage rates: BTL Mortgage Rate Index

The BTL Mortgage Rate Index carries 23 published figures read from 8 sources' own pages; the 7 published figures given by product run from 3.75 to 8.94 percent, read 23 October 2026.

3.75 to 8.94 % Range by product 7 published figures, not one market: read the rows
22 Published figures from 8 source pages, read 24 Oct 2026
8 of 27 Sources read that publish one 30% publish a figure at all
  1. Together commercial property mortgages8.94 %
  2. Foundation Home Loans buy to let product guide6.64 %
  3. Leeds Building Society buy to let mortgages6.47 %
  4. Foundation Home Loans buy to let product guide6.44 %
  5. Foundation Home Loans buy to let product guide6.29 %
  6. Fleet Mortgages product range6.15 %
  7. Foundation Home Loans buy to let product guide5.99 %
  8. Foundation Home Loans buy to let product guide5.69 %
  9. Foundation Home Loans buy to let product guide5.29 %
  10. Shawbrook commercial mortgages5.24 %
  11. Leeds Building Society buy to let mortgages5.23 %
  12. Leeds Building Society buy to let mortgages5.21 %
Every published figure, highest first; the top 12 of 23.
Table view
RowValue
Together commercial property mortgages8.94 %
Foundation Home Loans buy to let product guide6.64 %
Leeds Building Society buy to let mortgages6.47 %
Foundation Home Loans buy to let product guide6.44 %
Foundation Home Loans buy to let product guide6.29 %
Fleet Mortgages product range6.15 %
Foundation Home Loans buy to let product guide5.99 %
Foundation Home Loans buy to let product guide5.69 %
Foundation Home Loans buy to let product guide5.29 %
Shawbrook commercial mortgages5.24 %
Leeds Building Society buy to let mortgages5.23 %
Leeds Building Society buy to let mortgages5.21 %
  1. 24 to 5
  2. 135 to 5
  3. 45 to 6
  4. 36 to 7
  5. 7 to 8
  6. 18 to 9
Where the 23 published figures fall, %, in six equal bands from the lowest to the highest.
Bands
BucketValue
4 to 52 figures
5 to 513 figures
5 to 64 figures
6 to 73 figures
7 to 80 figures
8 to 91 figure

8 of the 27 named sources read in full publish a figure; 19 publish none, read 23 October 2026.

By product and lender and fee and LTV band and fix length

BreakdownMedianRangeSources
productbank-rate3.75%3.75 to 3.75%1
productcommercial7.09%5.24 to 8.94%2
productbuy-to-let4.85%4.69 to 5.21%4
lenderHSBC5.11%5.11 to 5.11%1
fee0%6.15%6.15 to 6.15%1
fee2%4.5%4.5 to 4.5%1
feefee-saver5.17%5.17 to 5.17%1
fee1.50%6.44%6.44 to 6.44%1
fee2.00%6.64%6.64 to 6.64%1
LTV band60%5.23%5.23 to 5.23%1
LTV band75%6.47%6.47 to 6.47%1
LTV band80%5.99%5.99 to 5.99%1
fix length2 year4.81%4.81 to 4.81%1
fix length5 year4.75%4.75 to 4.75%1
fix length2-year5.12%4.95 to 5.29%2
fix length5-year5.48%4.96 to 5.99%2

Every figure, with its source

One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.

The sentence each figure was read from (23)

Read in full, publishes no figure

19 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.

Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).

8 of the 27 named sources that could be read published a usable figure; 19 published none and are recorded as not published, never filled in; 2 could not be read (blocked, dead or unreachable) and count nowhere.

The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in % (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 22 figures, never sentences; 355 candidate sentence(s) were refused by a reviewer with the reason recorded.

The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): the lowest, median and highest advertised initial rate across every lender publishing a buy-to-let product page, per LTV band, per fix length and per product fee, beside the Bank of England Bank Rate; the spread over Bank Rate, the fee-adjusted true cost, and the movement since the last read - the calculators the keywords ask for are generated from this table rather than from a typed-in default

355 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.

Sources (29)
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The BTL Mortgage Rate Index carries 23 published figures read from 8 sources' own pages; the 7 published figures given by product run from 3.75 to 8.94 percent, read 23 October 2026.

8 of the 27 named sources read in full publish a figure; 19 publish none, read 23 October 2026.

BTL Mortgage Rate Index, product bank-rate: median 3.75 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, product commercial: median 7.09 percent across 2 sources, read 23 October 2026.

BTL Mortgage Rate Index, product buy-to-let: median 4.85 percent across 4 sources, read 23 October 2026.

BTL Mortgage Rate Index, lender HSBC: median 5.11 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fee 0%: median 6.15 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fee 2%: median 4.50 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fee fee-saver: median 5.17 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fee 1.50%: median 6.44 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fee 2.00%: median 6.64 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, LTV band 60%: median 5.23 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, LTV band 75%: median 6.47 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, LTV band 80%: median 5.99 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fix length 2 year: median 4.81 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fix length 5 year: median 4.75 percent across 1 source, read 23 October 2026.

BTL Mortgage Rate Index, fix length 2-year: median 5.12 percent across 2 sources, read 23 October 2026.

BTL Mortgage Rate Index, fix length 5-year: median 5.47 percent across 2 sources, read 23 October 2026.

Cite as: "Insurance by Profession BTL Mortgage Rate Index", updated 2026-10-24, https://insurancebyprofession.com/datasets/btl-mortgage-rate-index/.

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3.75 to 8.94 percent

7 of 23 published figures (product), BTL Mortgage Rate Index, across 8 sources, read 23 October 2026

Source: Insurance by Profession BTL Mortgage Rate Index

Download the CSV (23 rows, computed 2026-10-24)

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