True Cost of Homeownership Calculator
Lifetime cost of owning a home.
Calculate lifetime cost of homeownership including mortgage interest, maintenance, insurance, and property tax. Free and runs in your browser.
What this tool does
Enter mortgage payment, annual maintenance, insurance, and property tax. The tool totals 10-year and 25-year cost.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Homeownership costs far more than the mortgage payment. Maintenance runs 1-2% of property value yearly, insurance 0.3-0.6%, property tax varies hugely by jurisdiction. A 300,000 home with 1,300 monthly mortgage plus 3,000 annual maintenance plus 600 insurance plus 2,000 tax = 21,200/year total — 36% over the mortgage alone. Over 25 years that is 530,000 — dwarfing the original purchase price.
A worked example
Try the defaults: monthly mortgage payment of 1,300, annual maintenance of 3,000, annual insurance of 600, annual property tax of 2,000. The tool returns 21,200.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Monthly Mortgage Payment, Annual Maintenance, Annual Insurance, and Annual Property Tax. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.
The formula behind this
Annual sum of mortgage payment × 12 plus other costs. Projects to 10 and 25 years. Ignores cost growth and mortgage payoff — both real factors over long horizons. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
Stress-testing the plan
Run the calculation at your current rate, then run it again at a rate 2–3 percentage points higher. That's roughly what a product reset could bring at renewal, and it's a useful check on whether you can afford the mortgage in a higher-rate world, not just today's.
What this doesn't capture
The figure excludes arrangement fees, valuation costs, legal fees, insurance, and any early-repayment charges — those can add several thousand to the headline cost. Rate changes at renewal for fixed-term deals will shift the picture further. Use this for the core interest/principal math and add the other costs on top.
Homeownership cost produces a long-term total based on the inputs provided.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Annual sum of mortgage payment × 12 plus other costs. Projects to 10 and 25 years. Ignores cost growth and mortgage payoff — both real factors over long horizons.
Frequently Asked Questions
Does maintenance really hit 1-2% yearly?
What about inflation on these costs?
Does this include opportunity cost?
Why does ownership still make sense?
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