Renting is not throwing money away
The rent-vs-buy debate is usually framed as “rent is wasted, mortgages build wealth” — but the first years of a mortgage are mostly interest, tax, insurance and maintenance, none of which builds wealth either. This calculator puts both options on equal footing over five years. Renting totals every rent cheque, grown each year by your assumed increase. Buying totals everything you pay — down payment, closing costs, mortgage payments, tax, insurance, maintenance — then subtracts the equity you actually own at the end (the appreciated home value minus the remaining loan balance).
What swings the answer
Three assumptions dominate the result. How long you stay: buying usually wins over 7–10 years because the large upfront costs spread out; over 2–3 years renting usually wins. Price growth vs rent growth: fast-appreciating markets favour buying, fast-rising rents punish renting. Interest rates: higher rates mean more of each mortgage payment goes to the bank rather than your equity. Try the extremes — 0% appreciation, or a 6% rent increase — to see how sensitive your decision is.
Costs this comparison leaves out
No five-year model captures everything. Selling a home typically costs 5–6% in agent fees in the US (1–3% in the UK), which can erase buying’s advantage if you move soon after. Renters, meanwhile, keep their down payment invested — this calculator does not credit that investment growth, which flatters buying slightly. Treat the verdict as a strong signal, not a final answer, and weigh the non-financial factors too: flexibility, stability and how much you value making a place your own.