Free Calculators

Make sense of your money,
before you commit to anything.

Simple, honest tools to help you compare your options before you sign anything, invest anything, or borrow anything.

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The Interest Saver Calculator

Find the cheapest way to finance a purchase — comparing loans, 0% cards, balance transfers, and cash, side by side.

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The Wealth Growth Calculator

See what your money could grow to over time — with regular contributions that can step up each year with inflation.

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Overpay Your Mortgage, or Invest?

Compare clearing your mortgage faster against investing the same amount instead — and see which wins for you.

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The Mortgage Borrowing Calculator

A realistic mortgage affordability estimate — going beyond a simple income multiple to reflect how lenders actually assess you.

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The Spend & Save Calculator

Put everyday spending on a 0% card, keep your cash earning interest, and roll the debt with balance transfers — see the real return before you try it.

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The Wealth Building App

Everything these calculators do, and more — built into a single app to help you plan, track, and grow your money.

Coming soon

Want first access to the app?

Get notified the moment it launches, plus the occasional tip from the calculators above.