---
title: "Free UK property calculators"
description: "Free UK property calculators that show their working: stamp duty, LBTT, LTT, landlord tax 2027, mortgage repayments and rental yield. Rates checked against GOV.UK."
url: https://housemaths.com/tools/
publisher: House Maths (https://housemaths.com)
editor: Daniil Shumko
note: General information about UK property, not financial advice. Check the dated figures against the sources listed.
---

Free calculators

# UK property calculators that show their working

No sign-up and nothing to install. Each calculator prints the sum it did, so you can check it, and says when its rates were last checked.

[SDLT Buying

## Stamp duty calculator

England and Northern Ireland. First-time buyer relief and the 5% surcharge, band by band.

](https://housemaths.com/tools/stamp-duty-calculator/)[24/44/49 Landlords

## Landlord tax 2027 calculator

What the new property income rates add to your bill from April 2027, with the mortgage interest credit.

](https://housemaths.com/tools/landlord-tax-calculator/)[£/mo Mortgages

## Mortgage repayment calculator

Monthly repayments, total interest, and what a rate rise does to your payment.

](https://housemaths.com/tools/mortgage-calculator/)[LBTT Buying

## LBTT calculator (Scotland)

Land and Buildings Transaction Tax, first-time buyer relief and the 8% ADS.

](https://housemaths.com/tools/lbtt-calculator/)[LTT Buying

## LTT calculator (Wales)

Land Transaction Tax main and higher rates, worked band by band.

](https://housemaths.com/tools/ltt-calculator/)[% Landlords

## Rental yield calculator

Gross and net yield, monthly cash flow, and the costs most people forget.

](https://housemaths.com/tools/rental-yield-calculator/)[2.5% Buying

## Your First Home calculator

The new 20% government equity loan for first-time buyers: deposit, mortgage and the monthly cost from year 6.

](https://housemaths.com/tools/your-first-home-calculator/)[+£/mo Mortgages

## Fixed rate ending? Remortgage calculator

What your payment does when your fix ends and you move to a new rate.

](https://housemaths.com/tools/remortgage-calculator/)[MTD Landlords

## Making Tax Digital checker

When quarterly digital tax updates start for you, from your rent before expenses.

](https://housemaths.com/tools/making-tax-digital-checker/)

## Coming next

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### Home value estimate

An estimated price range for your home from nearby sold prices, with the comparables shown.

[Join the early list →](https://housemaths.com/home-value/)

£££

### Total buying costs

Stamp duty, solicitor, survey, mortgage fees and moving costs in one total.

4.5×

### How much can I borrow?

A realistic borrowing range from income, outgoings and today's stress-test rates.

18/24

### Capital gains on property

Tax when you sell a second home or rental, with the £3,000 allowance.

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### Rent or buy?

Compare the real cost of renting and owning over the years you plan to stay.