Savings Calculator 2027
Find out exactly how much your savings will grow. Enter your starting balance, monthly contribution, and expected interest rate to see a year-by-year projection — instantly, and completely free.
How the Savings Calculator Works
This calculator answers a simple but important question: if I save a certain amount every month, starting with what I already have, and it earns a given interest rate, what will my balance look like in the future? The math behind it is the same future-value-of-annuity formula used by banks, financial planners, and retirement calculators around the world.
Each month, two things happen to your balance. First, your existing balance earns interest for that month, calculated as your annual interest rate divided by twelve. Second, your monthly contribution is added on top of that new, slightly larger balance. This process repeats every month for as many years as you specify, so your contributions in later years are effectively earning interest on top of interest earned in earlier years — the snowball effect that makes compound interest so powerful over long periods.
Because interest compounds on the growing balance rather than just the original principal, the growth curve you see in the chart above starts out fairly straight and gradually bends upward. In the early years, most of your balance growth comes from your own contributions. In later years — especially past the ten or fifteen year mark — a larger and larger share of your growth comes from interest alone. This is why financial advisors so often stress starting early: time, more than the size of any single contribution, is what compound interest needs to work.
Why Saving Consistently Matters More Than Timing the Market
One of the most common questions people ask is whether it's better to wait for "the right time" to start saving, or simply to begin now with whatever amount they can manage. The math strongly favors starting immediately. Because interest compounds monthly, every month you delay is a month of lost compounding — and that lost time can never be fully recovered, even if you later contribute larger amounts to catch up.
Try this yourself: use the calculator above to compare a 10-year plan that starts today against an 8-year plan with a larger monthly contribution that starts two years from now. In most cases, the earlier, smaller, more consistent plan will out-earn the later, larger one, simply because it had more time for interest to compound. This is one of the clearest, most practical lessons a savings calculator can teach — numbers make the abstract idea of "start early" concrete and visible.
Understanding the Three Results
After you run a calculation, three figures appear above the chart. The Future Balance is your total projected savings at the end of the time period, combining your starting amount, contributions, and all interest earned. The Total Contributed figure shows how much money actually came out of your own pocket — your initial deposit plus every monthly contribution added up, with no interest included. The Interest Earned figure is simply the difference between the two — it represents money your savings generated on their own, without any extra effort from you.
Watching how the Interest Earned figure grows as you extend the time period is one of the most motivating exercises in personal finance. For short periods, interest earned is often a small fraction of your total contributions. Extend the same plan to twenty or thirty years, however, and interest earned can end up exceeding — sometimes by a wide margin — the amount you personally put in.
Tips for Getting the Most Accurate Projection
- Use a realistic interest rate. High-yield savings accounts, certificates of deposit, and conservative investment funds each carry very different typical rates — check your actual account's current annual percentage yield (APY) rather than guessing.
- Account for rate changes. Interest rates on savings accounts can change over time. This calculator assumes a constant rate for simplicity — for a closer real-world estimate, consider re-running the calculation periodically with updated rates.
- Be consistent with your monthly contribution. The projection assumes the same contribution every month. If your income varies, try running the calculator with a conservative, lower monthly figure you're confident you can sustain.
- Remember taxes and fees. Depending on your country and account type, interest earned may be taxable, and some accounts carry maintenance fees — neither is factored into this calculator's raw math.
Frequently Asked Questions
What is a savings calculator?
A savings calculator is a tool that projects how a starting balance plus regular monthly contributions will grow over time when interest compounds monthly.
How is savings growth calculated?
Each month, the current balance earns interest at the annual rate divided by twelve, and the monthly contribution is then added. This repeats for the chosen number of years.
Is the savings calculator accurate?
It uses standard monthly-compounding math used by most banks, but actual results can vary with changing interest rates, fees, and your bank's specific compounding schedule.
Can I use this for a joint or family savings plan?
Yes — simply combine your household's total starting balance and total monthly contribution into the two input fields to project your shared savings growth.