A holiday, a deposit, a car, a cushion. Enter the target and what you can put away each month — get the date you'll hit it.
Every savings goal is governed by the same three levers: the target, the monthly contribution, and time. Interest helps at longer horizons, but for most goals the contribution is the lever that matters — which is why the results above show what a 25% or 50% bump does to your date. Finding that bump is a budgeting problem, not a willpower problem: run the subscription audit or build a zero-based budget and the extra contribution usually reveals itself.
The calculator simulates month by month: your current savings earn interest at the rate you set (compounded monthly), your monthly contribution is added, and it counts the months until the balance crosses the goal. With a 0% rate it is simply the gap divided by your monthly contribution.
For goals under ~2 years, interest barely moves the date — set the rate to your savings account APY, or 0 to be conservative. Interest matters much more over 5+ year horizons, where compounding does real work.
Money you need within a few years generally belongs in cash savings (easy-access or fixed-term accounts), not investments — a market dip the month before you need it is the risk. This is general information, not financial advice.