Inputs
| Month | Start | Interest | Contribution | End |
|---|---|---|---|---|
| Calculate to see a preview | ||||
How to use
- Enter your goal amount and current savings.
- Set a time horizon (months) to see monthly savings needed.
- Optionally enter a monthly contribution to estimate time to goal.
- Add APY only for a rough estimate (not guaranteed).
How it works
The tool computes the gap and estimates: monthly savings needed to hit the goal by your horizon, plus time to goal if you provide a monthly contribution.
Math assumptions (click)
- Gap = max(0, goal โ current).
- If APY is set: monthly rate โ (1 + APY)^(1/12) โ 1.
- Monthly needed uses a standard future value solve (or simple division if APY is 0).
- Time to goal is computed with a month-by-month simulation.
Privacy & disclaimer
Disclaimer: Educational estimates only. Not financial advice. Real outcomes can differ due to rates, taxes, fees, account rules, and personal circumstances.
Public PC warning: Avoid entering sensitive numbers on shared devices.
FAQ
How is monthly savings needed calculated?
If APY is 0, it is roughly (goal โ current) รท months. With APY, it uses a future value formula to estimate the monthly amount needed to reach your goal in the chosen time.
What time period should I choose?
Pick a timeline you can realistically stick to. Shorter timelines require higher monthly savings. Longer timelines reduce required savings but may be affected by changing rates and expenses.
Does this include taxes, fees, or inflation?
No. This is a planning estimate. Real outcomes can differ due to taxes, fees, changing rates, and inflation.
What if I already have more than my goal?
Then the gap becomes zero and the tool will show that your goal is already reached.
Does this tool store or upload my data?
No. All calculations run locally in your browser. Nothing is uploaded by this page.