Buying or renting: compare the costs and assumptions
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January 31, 2026
Daniel LuFull-Stack Engineer | Content Creator
A mortgage payment and a monthly rent figure do not tell the whole story. This calculator puts the other costs and the chosen assumptions alongside them.
Categories：Popular Science、Tool Guides
A mortgage payment and a monthly rent figure do not tell the whole story. This calculator puts the other costs and the chosen assumptions alongside them.
Compare the same period and assumptions
Include the upfront cash, recurring costs and the chosen treatment of maintenance and investment returns. Vary uncertain inputs rather than letting one forecast decide which option is right for everyone.
The House is the Shell, Life is the Core
We are not advising you definitely not to buy a house.
We just hope that when you sign that heavy contract, it is because you truly love that home, not because you fear being left behind by the times.
True security never comes from a property deed, but from your right to say "no" at any time.
Renting, in essence, is purchasing an option to "withdraw at any time if changes are needed". In the present full of uncertainty, this liquidity may be more precious than fixed assets.
Two Parallel Universes, Which One Do You Want?
The logic is understood, but how do you calculate the numbers?
To help you sort out this mess, we developed a "Buy vs Rent Calculator". It is not that kind of simple mortgage calculator; it helps you simulate two completely different life trajectories:
- Buying: Burdened with a mortgage, owning property, facing interest, taxes, and maintenance costs.
- Renting: Living in a rented house, investing the down payment and the difference in monthly payments, enjoying compound interest and freedom.
Input your city's housing prices, rent, and expected investment return rate, and click calculate. Perhaps the moment those two curves cross is the beginning of your life's liberation.
Go try it out, be a sober long-termist.
🔗 Buy vs Rent Calculator
Based on opportunity cost and compound interest models, calculate the real wealth gap in the next 30 years
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