Savings Goal Planner

At its core, this calculator solves for the required periodic payment in a future-value equation. You provide three inputs: your savings target (the future value you want to reach), your timeline (the number of months until your deadline), and the annual interest rate your savings account or investment vehicle will earn. The calculator then works backward from that target to tell you precisely how much you need to set aside each month. Because money deposited earlier has more time to earn interest, the monthly amount is almost always lower than simply dividing your goal by the number of months—sometimes significantly so.

The interest rate assumption is the single most impactful variable after the target amount itself. A high-yield savings account (HYSA) in the US currently offers annual percentage yields (APYs) between 4% and 5%, while a traditional savings account may offer just 0.01–0.05%. Entering the correct rate for your actual account dramatically changes your required monthly deposit. For longer timelines—say, five or more years—even a modest interest rate compounds into thousands of dollars of 'free' growth, meaningfully reducing the burden on your monthly budget. Always use the APY (not the nominal rate) for the most accurate result.

Timing and consistency are the behavioral factors the formula can't capture but that determine real-world success. The calculator assumes you make equal deposits at the end of each month (an ordinary annuity structure). If you automate these transfers on payday, you remove the temptation to skip a month, which is the most common reason savers fall short of their goals. Some planners choose to front-load their savings—depositing more early on when motivation is highest—which will put them ahead of the calculator's schedule and reduce pressure later. Either way, the monthly target from this tool serves as your minimum floor, not a ceiling.

A common mistake is ignoring inflation for long-term goals. If your target is a home down payment five years from now, the actual price of homes may rise, meaning your nominal savings goal should be adjusted upward periodically. Similarly, many users forget to account for taxes on interest earned in a regular savings account; in the US, interest is taxed as ordinary income, slightly reducing your effective yield. For goals over a decade away, consider whether a tax-advantaged account (like a 529 for education or an IRA for retirement) might be more appropriate, though the core monthly-savings math this calculator provides remains the same starting point.