Useful next calculations
Rates and sources
SDLT/LTT/LBTT bands vary between England, Wales, Scotland and Northern Ireland. Use the appropriate calculator.
Source: HMRC / Welsh Revenue / Revenue Scotland. Check the linked guidance and any live quote before acting.
When to use this calculator
- Before buying, renting, refinancing or reviewing a property investment.
- When you want to compare cash flow, tax, yield or ownership costs.
- When you need a fast estimate before speaking to an agent, lender or adviser.
- When you want to see how a rate or price change moves the result.
A worked example
These are the example figures the calculator opens with.
| Input | Value |
|---|---|
| Monthly take-home income (£) | £3,000 |
| Monthly rent (£) | £1,200 |
| Essential monthly spending excluding rent (£) | £900 |
| Monthly debt payments (£) | £200 |
For those figures the calculator returns:
- Cash left after plan: £400.00
- Rent share of take-home: 40.00%
- Other commitments + buffer: £1,400.00
- Total planned outgoings: £2,600.00
Method & assumptions
This UK-only budgeting planner subtracts the rent, essential spending, debt payments and safety buffer you enter from your stated monthly take-home pay. It shows the remaining amount and the proportion of that take-home pay represented by rent.
It is not landlord, letting-agent, guarantor or benefits eligibility advice. It does not include referencing rules, deposits, rent in advance, local council-tax bands or any legal assessment. Use it to compare your own scenarios, then confirm the full tenancy costs and eligibility directly with the relevant provider.
Common mistakes
- Comparing rent and ownership costs without including taxes, fees and maintenance.
- Using purchase price alone without testing financing or vacancy assumptions.
- Relying on yield or growth in isolation instead of reviewing the full property case.
- Using the wrong national transaction-tax calculator for the purchase location.
What to do next
- Run a second scenario with a higher rate or lower rental yield.
- Compare the result with a buy-versus-rent or mortgage calculator before making an offer.
- Use the matching national transaction-tax calculator for the purchase location.
- Note the key figures to share with your solicitor or lender.