Two tools. The first works out what a mortgage costs each month, how much of it is interest, and what an overpayment saves you. The second compares renting against buying over the years you expect to stay.
They are estimates for planning, not quotes or advice. Lenders price on their own criteria, and a rent versus buy comparison rests on assumptions about growth that nobody can know in advance. The figures they open with are illustrative starting points — change them to your own.
Your monthly payment on a repayment or interest-only mortgage, the full monthly cost of owning, and the total interest over the loan.
Payments use monthly compounding. Your lender's figures may differ slightly. A guide, not financial advice.
How much you still owe each year: repayment versus interest-only on the same loan.
| Year | Interest paid | Principal paid | Total paid | Balance at year end |
|---|
Which builds more wealth over your time horizon: buying, or renting and investing the difference. Works with repayment and interest-only mortgages.
Renting assumes you invest the down payment, closing costs and any monthly saving at your chosen return. Selling costs are taken off the home at the end. A guide, not financial advice.
What you would have if you sold the home that year, versus renting and investing.
| Year | Home equity | Net worth (buy) | Net worth (rent) | Buying ahead by |
|---|
Calculators by LoanViz · A guide, not financial advice.
Results exclude stamp duty, legal costs, survey and product fees unless you enter them. Nothing here is financial, tax or mortgage advice — speak to a qualified broker or accountant before committing. Buying an additional property? Read what to check before buying a buy-to-let in Manchester, and confirm stamp duty on GOV.UK.