What deposit do I need for a buy-to-let mortgage?

Most lenders require a minimum 25% deposit for a buy-to-let mortgage. Better rates are available at 40% or more.

Can I get a buy-to-let mortgage as a first-time buyer?

Some lenders allow it, but most prefer borrowers who already own a residential property. First-time buyer BTL mortgages are more expensive and harder to find.

How is rental income taxed in the UK?

Rental income is taxed as part of your total income at your marginal rate. You can no longer deduct mortgage interest — instead, you receive a 20% tax credit on mortgage interest paid.

What is the stamp duty surcharge on buy-to-let properties?

Buy-to-let and second properties attract a 3% surcharge on top of standard stamp duty rates. For a £250,000 property, this adds £7,500 to your purchase costs.

Buy to Let Mortgage UK 2026 — Complete Guide: Rates, Rules and Costs

Buy to Let Mortgage UK 2026 — Complete Guide for Landlords

Complete guide to buy-to-let mortgages UK 2026 — how they work, best rates, rental yield requirements, stamp duty costs, and tax implications for landlords.

Chandraketu Tripathi

Finance Editor, Kaeltripton

Published 3 Apr 2026

Last reviewed 3 Apr 2026

✓ Fact-checked

UK Finance Guide — 2026

This comprehensive guide covers everything you need to know about buy to let mortgage uk 2026 in the UK for 2026.

How Buy-to-Let Mortgages Work

Buy-to-let (BTL) mortgages are specifically designed for properties you intend to rent out. They differ from residential mortgages in several key ways.

Feature	Residential Mortgage	Buy-to-Let Mortgage
Deposit required	5–10% minimum	25% minimum (typically)
Interest rate	Lower	Higher (0.5–1% above residential)
Repayment type	Repayment common	Interest-only common
Affordability check	Based on your income	Based on rental income (125–145% of mortgage payment)
Tax on interest	N/A	Restricted — 20% tax credit only

Current Buy-to-Let Mortgage Rates — April 2026

BTL rates have risen significantly since 2021. As of April 2026:

Product	Rate	Notes
2-year fixed (60% LTV)	~4.9–5.3%	Best rates for large deposits
2-year fixed (75% LTV)	~5.2–5.7%	Most common BTL LTV
5-year fixed (75% LTV)	~5.0–5.4%	Popular for rate certainty
Tracker (75% LTV)	~5.1–5.5%	Moves with base rate

Rental Yield Requirements

Lenders require your rental income to cover 125–145% of the monthly mortgage payment at a stressed rate (typically 5.5–6%). This is called the interest coverage ratio (ICR).

Monthly Mortgage Payment	ICR Requirement	Minimum Monthly Rent Needed
£800	145%	£1,160
£1,000	145%	£1,450
£1,200	145%	£1,740
£1,500	145%	£2,175

Tax on Buy-to-Let Income

Tax rules for landlords have tightened significantly since 2017. The main changes affecting BTL investors in 2026:

✅ Key actions to take now

Read the full breakdown above for your specific situation
Use the comparison tables to find the best option for you
Check the related articles below for more detailed guidance
Bookmark this page — figures update as rates and rules change in 2026

Bottom line: Use this guide to understand your options and take action. The UK financial landscape in 2026 has changed significantly — staying informed and making proactive decisions is the difference between making the most of your money and leaving value on the table.

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By Chandraketu Tripathi · Updated April 2026 · kaeltripton.com

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Buy to Let Mortgage UK 2026 — Complete Guide for Landlords

How Buy-to-Let Mortgages Work

Current Buy-to-Let Mortgage Rates — April 2026

Rental Yield Requirements

Tax on Buy-to-Let Income

✅ Key actions to take now

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