When will you actually hit your savings goal?

The savings math nobody bothers to do

It's the same shape as any goal. Distance divided by speed equals time. The distance is what you need; the speed is what you can realistically tuck away each week. Time falls out the bottom — and on a calendar, it changes behaviour.

Most people skip this calculation because spreadsheets are joyless. So the goal stays vague, savings drift, and "we'll get there eventually" turns into another year gone.

How to calculate your savings date

Worked example in Australian dollars. Goal: A$20,000 for a house deposit. Realistic weekly transfer after rent and bills: A$420.

A$20,000 ÷ A$420/week ≈ 48 weeks. Just under 11 months. If today is the start of January, you'd land your deposit around mid-November. That's a Tuesday you can plan around.

Where compound interest fits in (and where it doesn't)

If you're saving for under two years, compound interest barely moves the date. A high-interest savings account at 5% on A$20,000 over a year earns about A$500 — useful, but not life-changing.

Over five-plus years, compounding starts to matter. Our calculator factors in your interest rate so the date stays honest as the timeline stretches.

Why naming a date doubles your odds of finishing

Gollwitzer's 1999 work on implementation intentions found that people who said "I will do X on Tuesday at 7pm" hit their goals roughly twice as often as those with vague intentions. The mechanism is mundane: a date forces you to plan, planning surfaces the weekly behaviour, and the behaviour does the work.

A date you can write down beats a number you keep meaning to save.

What to do when your weekly amount changes

It will. Some weeks you'll save more; some weeks the car needs new tyres. Open the calculator, update the weekly number, see the new date. Same rule everywhere on futureGoal: recalculate, don't restart.

Try the savings calculator

Free, no signup needed to see your date. Works in any currency. Bring a buddy if you want a weekly nudge.