Buy-to-Let Property Calculator
Calculate the total cash needed to purchase a buy-to-let property in the UK, including stamp duty, conveyancing costs, and mortgage payment estimates.
Property Details
About This Calculator
This calculator helps you estimate the total cash outlay needed to purchase a buy-to-let property in the UK, with options for both cash purchases and mortgage-based investments.
What's Included
- Current UK Stamp Duty Land Tax rates (including the 5% surcharge for additional properties)
- Estimated conveyancing costs based on property value
- Survey costs
- Mortgage calculations for both repayment and interest-only options
- Estimated mortgage arrangement fees
Important Notes
- Buy-to-let mortgages typically require a minimum 25% deposit, though some lenders may offer 15-20%
- Interest rates for buy-to-let mortgages are generally higher than residential mortgages
- Most buy-to-let investors opt for interest-only mortgages to maximize rental yield
- The calculator doesn't include ongoing costs such as insurance, maintenance, management fees, or tax considerations
Stamp Duty on a Buy-to-Let (England and NI)
The 5% surcharge is added to each band, so it applies from the first pound:
| Portion of price | Standard rate | Additional property rate |
|---|---|---|
| Up to £125,000 | 0% | 5% |
| £125,001 to £250,000 | 2% | 7% |
| £250,001 to £925,000 | 5% | 10% |
| £925,001 to £1.5 million | 10% | 15% |
| Over £1.5 million | 12% | 17% |
Example: a £250,000 buy-to-let bought with a 25% deposit. Stamp duty is £15,000 (£6,250 plus £8,750). With £1,000 legal fees, a £500 survey and a £995 arrangement fee, you need about £79,995 in cash. A £187,500 repayment mortgage at 4.5% over 25 years costs about £1,042 a month.
Running costs to budget for
Letting agent fees (often 10% to 15% of rent for full management), landlord insurance, safety certificates, repairs, void months between tenants, and income tax on the profit. Check whether the rent really covers all of that with the rental yield calculator.
How much stamp duty do I pay on a buy-to-let?
In England and Northern Ireland, buying an additional residential property adds a 5% surcharge to every band of Stamp Duty Land Tax. On a £250,000 buy-to-let that means 5% on the first £125,000 and 7% on the rest, a total of £15,000.
Can I deduct mortgage interest from rental income?
Not directly. Individual landlords get a tax credit worth 20% of their mortgage interest instead of deducting it as an expense. Higher rate taxpayers therefore get less relief than they used to. Limited companies can still deduct interest as a business cost.
How much deposit do I need for a buy-to-let mortgage?
Usually at least 25% of the purchase price. Lenders also check that the expected rent covers the mortgage interest by a margin, commonly 125% for basic rate taxpayers and 145% for higher rate taxpayers, at a stressed interest rate.
Does the surcharge apply in Scotland and Wales?
Scotland and Wales have their own property taxes. Scotland adds an Additional Dwelling Supplement to Land and Buildings Transaction Tax, and Wales charges higher rates of Land Transaction Tax on additional properties. This calculator uses the England and Northern Ireland rates.
Sources: GOV.UK: SDLT residential rates and tax relief for residential landlords. General information, not financial advice.