Complete guide
Rent vs. Buy Calculator: formula, worked example and interpretation
Compare simplified unrecoverable renting and owning costs over a selected horizon, including home equity at sale. Enter the known values and the result updates instantly with an auditable breakdown.
What the Rent vs. Buy Calculator answers
Compare simplified unrecoverable renting and owning costs over a selected horizon, including home equity at sale.
Use the breakdown to compare the result with the source values before making a decision.
Formula and variables
The calculation uses net owning cost=cash outflows−net sale equity; renting cost=Σ rent. Every variable comes directly from a labeled field.
net owning cost=cash outflows−net sale equity; renting cost=Σ rentWorked example
Seven years of growing rent are compared with down payment, mortgage, ownership costs and net sale proceeds.
Changing any field recalculates the result immediately, so nearby scenarios can be compared without reloading the page.
How to use the result
Treat the result as a planning value and compare it with the detailed rows shown beside it.
Keep units and time periods consistent. Use the share or PDF action to preserve the exact assumptions.
Assumptions and scope
Investment opportunity cost, taxes, repairs, rent deposits, transaction timing and uncertain price changes can reverse the comparison.
The calculator exposes its assumptions instead of filling missing facts with hidden estimates.
Accuracy checks
Confirm the units, dates, rates and source figures before relying on the output.
Round only the displayed answer; Calculator24 keeps full JavaScript precision for intermediate arithmetic and exported values.
Input and output checklist
| Item | What to enter or review |
|---|---|
| Inputs | Current monthly rent ($), Annual rent growth (%), Home price ($), Down payment (%), Mortgage rate (%), Comparison years, Annual home appreciation (%), Tax, insurance and maintenance (% of price), Selling cost (% of future value) |
| Equation | net owning cost=cash outflows−net sale equity; renting cost=Σ rent |
| Example | Seven years of growing rent are compared with down payment, mortgage, ownership costs and net sale proceeds. |
| Limit | Investment opportunity cost, taxes, repairs, rent deposits, transaction timing and uncertain price changes can reverse the comparison. |
Frequently asked questions
What does this Rent vs. Buy Calculator calculate?
Compare simplified unrecoverable renting and owning costs over a selected horizon, including home equity at sale.
Which formula does it use?
net owning cost=cash outflows−net sale equity; renting cost=Σ rent
Does the result update while I type?
Yes. Valid changes recalculate after a short delay and the previous result is not substituted for invalid input.
Which assumptions should I check?
Check units, rates, dates and every source value shown in the form.
Is the result exact?
Investment opportunity cost, taxes, repairs, rent deposits, transaction timing and uncertain price changes can reverse the comparison.
Can I save or share the calculation?
Yes. Copy, Share, WhatsApp, PDF/Print, CSV, comparison and parameterized-link actions are available.
What to keep in mind
Investment opportunity cost, taxes, repairs, rent deposits, transaction timing and uncertain price changes can reverse the comparison.
Results display up to 8 decimal places; exported numbers preserve calculation precision. This is a calculation summary, not an official certificate.