Pro Calculator
Owner-Occupied Home Calculator
The true monthly cost of buying your own home — mortgage, stamp duty and fees.
Residential Property Purchase Model
A calculator for prospective homeowners
Purchase Summary & Projections
1. Buyer & Property Details
2. Mortgage Details
3. Government Schemes
4. Upfront Purchase Costs
5. Initial Property & Moving Costs
6. Ongoing Monthly Costs
7. Affordability Stress Test
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Every figure you have entered and everything the model returns, sent to your inbox. Forward it to a broker, a partner or a solicitor — or reply to it with a question.
On its way.
Buying the home you live in is an emotional decision with a monthly cost. This calculator strips it back to the real number: what owning costs you each month, all in, against what renting the same house would.
What this calculator works out
- Deposit, stamp duty at the residential rates and every purchase cost.
- Mortgage payment on repayment or interest-only terms, at the rate you can actually get.
- The costs a tenant never sees: buildings insurance, service charge and ground rent on a leasehold, and a realistic maintenance allowance.
- The true all-in monthly cost, set against the rent on an equivalent property.
A worked example
A £220,000 house on a 90% mortgage at 4.8% costs about £1,140 a month on repayment. Add insurance and a £150 maintenance allowance and the real cost is nearer £1,340 — against £1,050 to rent the same house, with £22,000 of capital tied up.
Common questions
Do first-time buyers pay stamp duty?
First-time buyer relief reduces or removes the charge below the relevant threshold, and the higher-rate surcharge does not apply when this is the only property you own. The calculator applies the residential rates rather than the investor ones.
Is buying cheaper than renting?
Month to month it is often slightly more expensive once maintenance and insurance are counted. The case for buying is the capital you build and the security of tenure, not a lower monthly outgoing.
How much should I budget for maintenance?
One per cent of the property value a year is the conventional allowance, and older housing stock needs more. It is the line that owners forget and that turns a comfortable budget into an uncomfortable one.
Related tools and services
Worth running the same deal through the Buy-to-Let Calculator and the HMO Calculator before you commit to a strategy — the same building can look very different under each, and the gap between them is usually the real decision. The rest are in the calculator library.
If the numbers work and the property is in Liverpool or the Wirral, we run it for a living: see HMO and BTL management for a property you already own, or investment sourcing if you are still looking for the right one.
Want this run on a real deal with you? Come to the free class, or take the whole set in the UK Property Investor Toolkit.