Rent vs Buy: How to Run the Numbers Honestly
Compare renting and buying on total cost, not the monthly payment: unrecoverable costs, the 5% rule, time horizon and the value of flexibility.
Read the guideBuy vs Rent
Compare monthly housing cost for buying versus renting.
Estimated Buy Payment$0
Monthly Rent$0
Difference$0
About the Buy vs Rent
The Buy vs Rent is most useful when you want more than a quick number. Compare buying and renting over a chosen time horizon. In practice, that means turning a rough idea into a planning decision that you can actually live with month after month. A lot of people stop at the first result they see, but the real value of this tool comes from comparing scenarios and understanding why the result changes.
Next, change one input at a time. This is where many users miss the real insight. When you adjust several numbers together, it becomes hard to tell what is driving the change. A cleaner method is to hold everything constant except one variable. You might test testing a shorter stay horizon against higher ownership costs, then compare that result with the original scenario. That one comparison often teaches more than a dozen random calculations.
How to use the Buy vs Rent
- Enter purchase assumptions, rent, time horizon, and recurring ownership costs.
- Compare the total cost of ownership with the cost of renting over the same period.
- Use the result together with flexibility and lifestyle factors, not just the headline number.
Buy vs rent comparison method
Ownership cost = mortgage + taxes + insurance + maintenance + opportunity cost; rent cost = rent payments ± investment effect on unused capital
- Ownership cost: Total cost of buying and holding
- Rent cost: Total cost of renting over the same period
- Time horizon: How long you expect to stay
The longer the horizon, the more the result depends on appreciation assumptions, rent growth, and ownership costs.
Quick planning notes for the Buy vs Rent
Compare buying and renting over a chosen time horizon. Start with a realistic baseline, then change one input at a time to see how the result moves. That makes it easier to compare scenarios and spot the trade-offs that matter most.
Housing decision tips
- Test multiple down payment and term combinations instead of relying on a single monthly payment estimate.
- Remember that taxes, insurance, maintenance, and closing costs can materially change the real cost of ownership.
- Compare the result with refinancing, DTI, and buy-vs-rent tools when the decision affects long-term cash flow.
Keep in mind
These results are designed for educational planning. Real-world figures can change based on official rates, lender fees, tax treatment, insurance, and personal circumstances.
Frequently asked questions
How accurate is this Buy vs Rent?
This tool is useful for planning and comparison. It uses simplified assumptions, so confirm important decisions with official rates, lenders, or tax advisers.
Can I use this Buy vs Rent on mobile?
Yes. The calculator is responsive and works on phones, tablets, and desktop browsers.
Does this tool store my financial data?
No. Calculator inputs stay in your browser and are not saved to our server.
Guides on this topic
Plain-English explanations to help you read the result above.
UK Stamp Duty Explained, Including First-Time Buyer Relief
Current Stamp Duty Land Tax bands in England and Northern Ireland, first-time buyer relief, the surcharge on additional homes, and worked examples.
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