Savings Goal Calculator
Instead of calculating what your savings eventually become, this calculator flips the question around: how long until you reach a specific savings goal? Enter your current savings, monthly deposit and expected interest rate, and the calculator simulates month by month until your goal is reached. Useful for an emergency fund, a house down payment or a big purchase.
結果
43 mo
Time to goal
- Total deposited
- ￥9,600
- Of which interest
- ￥580.66
How this was calculated
- 1Simulate month by month: balance grows with interest and depositssaldo × (1 + 0.0025) + ￥200
- 2Stop once the balance reaches your goal
公式
balance(month n) = balance(month n−1) × (1 + i) + deposit, with i = annual rate ÷ 12 ÷ 100, until balance ≥ goal
There is no simple formula that directly yields the time when you have both a starting amount and a monthly deposit. Instead, the calculator simulates month by month: each month the balance grows with that month's interest and the new deposit is added, until the goal is reached.
What the variables mean
- doel
- The amount you want to reach
- saldo
- Your savings balance, which grows each month
ステップ解説
- 1Enter your savings goal, current savings and monthly deposit.
- 2Enter the expected annual interest rate.
- 3See after how many months your goal is reached, including the total amount deposited and interest earned.
計算例
€ 1,000 now, € 200/month, 3% rate, goal € 10,000
→ Goal reached after 43 months (3 years and 7 months); € 9,600 deposited in total, of which ≈ € 581 is interest.
€ 0 now, € 100/month, 2% rate, goal € 5,000
→ Goal reached after 49 months (4 years and 1 month); € 4,900 deposited in total, of which ≈ € 201 is interest.
€ 5,000 now, € 300/month, 4% rate, goal € 20,000
→ Goal reached after 45 months (3 years and 9 months); € 18,500 deposited in total, of which ≈ € 1,847 is interest.
Reference table
| Monthly deposit | Months | Duration |
|---|---|---|
| € 100 | 90 | 7 years and 6 months |
| € 200 | 48 | 4 years |
| € 300 | 33 | 2 years and 9 months |
| € 400 | 25 | 2 years and 1 month |
| € 500 | 20 | 1 year and 8 months |
Assumes no starting balance and a 3% annual rate. Increase your deposit or rate and the goal comes into reach sooner.
よくある間違い
- Ignoring interest and so overestimating how long it will take.
- Entering an unrealistic monthly deposit that doesn't fit the household budget.
- Forgetting the rate here is assumed fixed, while real savings rates can change over time.
Tips
- Automate the transfer on the day your salary arrives — that prevents "forgetting" to save.
活用シーン
- Working out when you will have a house down payment saved.
- Building an emergency fund of 3 to 6 months of expenses.
- Saving for a holiday, wedding or other big expense with a fixed deadline.
よくある質問
What if I increase my monthly deposit?
Enter a higher monthly deposit amount and recalculate; you will immediately see how much faster you reach your goal.
What happens if my goal isn't reachable within 50 years?
Then the calculator shows the goal isn't reachable within that period. Increase the monthly deposit, lower the goal, or assume a higher rate to make it achievable.
Does the calculator account for tax on savings?
No, the calculator shows the gross result before tax. Depending on your country and assets, tax (such as wealth tax) can reduce the net result.
Can I combine a one-off starting amount with a monthly deposit?
Yes, enter your current savings under 'Current savings' and your fixed contribution under 'Monthly deposit'. The calculator combines both in the simulation.
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