Savings Goal Calculator
What this savings goal calculator does: it answers three questions about a goal like a down payment, a car, or a trip, each in its own tab:
1. How Long?: how many months until your savings reach the goal, and the target date
2. How Much / Month?: the monthly deposit that reaches the goal by a set number of years
3. What Can I Reach?: how much a monthly deposit grows to over a set time
4. Your goal in real money: what the goal will be worth after inflation, and what it would take to keep today’s buying power
Free, no sign-up. Your numbers stay in your browser. Results are educational projections, not financial advice.
Solve for time, monthly amount, or reachable target — and see your goal in real, inflation-adjusted money
Prices rise over time, so a goal reached years from now buys less than it does today. The BLS reported US inflation (CPI-U) of 3.4% for the 12 months ending August 2026; the latest figure is on its CPI page. The 3% default is a common long-run planning figure, not a forecast. Source: BLS Consumer Price Index.
| Date | Invested | Interest | Balance |
|---|
How to use the savings goal calculator
1. Pick a tab: How Long?, How Much / Month?, or What Can I Reach?
2. Choose your currency and start month.
3. Fill in the fields the tab shows: Target Goal Amount, Current Savings, Monthly Contribution, Timeframe (years), and Expected Annual Return (the interest rate your savings account pays, or 0%).
4. In the inflation box, set an Inflation rate (3% by default) to see the goal in today’s money.
5. Open the year rows in the table, or turn on Expand months, for the month-by-month schedule. Save with Copy Summary, Export CSV, Export PDF, or Copy Shareable Link.
How to read your results
| Result | What it means |
|---|---|
| Time to Reach Goal / Required Monthly / You Can Reach | The answer to the tab you picked, with the target date underneath. |
| Total Contributed | Your starting savings plus every monthly deposit. |
| Interest Earned | Growth you didn’t deposit yourself. |
| Goal in Today’s $ | What the goal amount will buy at the target date, in today’s prices. |
| To Keep Its Value, Aim For | The goal grows by inflation, so it buys at the target date what it buys today. |
| Out of Reach | The plan doesn’t get there within 100 years, usually because the monthly amount is 0 or very small. |
Worked example: a $20,000 goal
Here’s one example run through the How Long? tab, starting January 2027: a $20,000 goal, $3,000 already saved, $400 a month, and a 4.5% annual return, with 3% inflation.
| Result | Figure |
|---|---|
| Time to reach goal | 3 years 3 months (39 months), target date April 2030 |
| Total contributed / interest earned | $18,600 / $1,636 (ending balance $20,236) |
| Goal in today’s money / to keep its value | $18,168 / $22,017 |
| How Much / Month? for a 3-year deadline | $430.70 a month |
| What Can I Reach? at $400 a month for 5 years | $30,614 |
🧮 How this was calculated
- Monthly rate: 4.5% ÷ 12 = 0.375%. Month 1: interest $3,000 × 0.375% = $11.25; balance $3,000 + $11.25 + $400 = $3,411.25
- Months needed: n = ln((goal × r + deposit) ÷ (savings × r + deposit)) ÷ ln(1 + r) = ln($475 ÷ $411.25) ÷ ln(1.00375) = 38.5, rounded up to 39
- Contributed: $3,000 + 39 × $400 = $18,600. After 39 months, the balance is $20,236, so interest = $20,236 − $18,600 = $1,636
- 39 months = 3.25 years. Today’s money: $20,000 ÷ 1.033.25 = $18,168. To keep its value: $20,000 × 1.033.25 = $22,017
Assumptions: the same return every month · deposits at the end of each month · no withdrawals · no taxes on interest.
Example figures are illustrative, not averages or statistics.
Methodology and sources
1. Growth: each month, balance × annual return ÷ 12 is added, then the deposit. The future value of savings plus deposits uses the standard formula PV(1+r)n + PMT((1+r)n − 1) ÷ r.
2. How Much / Month? rearranges that formula to solve for the deposit; How Long? solves for n and rounds up to whole months.
3. Inflation: goal ÷ (1 + inflation)years for today’s money, and goal × (1 + inflation)years to keep its value. The BLS reported a 3.4% rise in consumer prices (CPI-U) for the 12 months ending August 2026; the 3% default is a long-run planning figure, not a forecast.
4. Interest rates aren’t fixed. Savings rates change, and investment returns can be negative. Bank deposits are insured by the FDIC up to its limits; investments are not.
5. Not included: taxes on interest and account fees.
Frequently Asked Questions
1. What is the best way to hit a large savings goal?
Ans: The most effective way is to automate it. Once you know your required monthly deposit, set up an automatic transfer from your checking to your savings account on payday.
2. How much do I need to save each month to reach my goal?
Ans: Open the How Much / Month? tab and enter the goal, what you’ve already saved, the number of years, and an interest rate. Without interest, it’s simply (goal − savings) ÷ months; for example, ($20,000 − $3,000) ÷ 36 = $472.22 a month. Interest lowers the amount.
3. What return should I enter?
Ans: For money you plan to spend within a few years, many people use the rate their savings account pays. Enter 0% to see the result with no interest at all. The calculator holds the rate steady, which real rates don’t.
4. Why does inflation matter for a savings goal?
Ans: If prices rise while you save, the same dollar amount buys less at the end. In the example, $20,000 in 3.25 years at 3% inflation buys about what $18,168 buys today. The inflation box shows that number for your goal.
5. Why is my ending balance a little above the goal?
Ans: The calculator counts whole months, so in the last month the balance usually passes the goal by part of a deposit. In the example, 38.5 months were needed, so month 39 ends at $20,236.
6. Where do people usually keep savings for a short-term goal?
Ans: Often in a savings, money market deposit, or certificate of deposit account, where the balance doesn’t fall with the market. Deposits at FDIC-insured banks are protected up to the insurance limits.
7. Does the calculator store my information?
Ans: No account is needed and nothing is stored on our servers. Export a PDF or CSV, or copy the shareable link, which stores your inputs in the link itself.
Kevin Brown researches personal finance topics using official sources; he is not a licensed financial advisor or mortgage lender. Last reviewed: October 2026.
