BCBetter Calculators

Savings Goal Calculator

Find out how much you need to save each month to reach any financial goal by a specific deadline, with or without interest.

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Enter your values and click Calculate

How It Works

First, the future value of your current savings is calculated: FV = Current × (1 + r)^n, where r is the effective monthly interest rate and n is the total number of months until your deadline. For non-monthly compounding frequencies, the effective monthly rate is derived from the nominal annual rate as: r = (1 + annual rate ÷ n_periods)^(n_periods ÷ 12) − 1. The gap between that projected future value and your goal is the amount that monthly contributions must cover. The required monthly contribution is then found by rearranging the future-value-of-ordinary-annuity formula: PMT = FV_needed × r / [(1 + r)^n − 1]. If your current savings alone will compound to the goal without any new deposits, the calculator reports zero monthly contribution needed and shows when the goal will be reached. With zero interest rate, the formula simplifies to: Monthly = (Goal − Current) ÷ Total Months. Weekly and daily equivalents are derived from the monthly figure by multiplying by 12 ÷ 52 and 12 ÷ 365 respectively.

Examples

$20,000 Down Payment in 3 Years — Starting with $2,000
A common goal: saving for a home down payment with some existing savings and a high-yield savings account.
Result: ~$472/month needed. Over 36 months you'd contribute ~$19,000 total, with ~$950 in interest earned.
$10,000 Emergency Fund in 18 Months — Starting from Zero
Building a fully-funded 6-month emergency fund from scratch at a standard HYSA rate.
Result: ~$527/month needed. Interest earned reduces the total you actually need to deposit by ~$370.
$50,000 Investment Goal in 5 Years
Growing a significant sum via index fund returns.
Result: ~$639/month needed. Investment growth reduces the required monthly contribution meaningfully versus saving at 0%.

Frequently Asked Questions

What interest rate should I use for my savings account?
Use 0% for a basic checking or zero-yield account. High-yield savings accounts (HYSAs) typically offer 4–5% APY as of 2024–2025. CDs might offer 4.5–5.5% for fixed terms. Index fund or brokerage accounts historically average 7–10% annually, though with much higher variance. Match the rate to where the money will actually live.
What is compounding frequency and does it matter?
Compounding frequency is how often earned interest is added back to your balance and begins earning interest itself. Daily compounding (common in HYSAs) earns very slightly more than monthly, which earns more than annually. For typical savings rates (4–5%), the difference between daily and monthly compounding over 3 years is less than $50 on a $20,000 goal — meaningful but not dramatic.
What if I can't afford the monthly amount shown?
Try extending the deadline (more months = smaller monthly target), increasing the expected return rate if you can invest more aggressively, or breaking the goal into a smaller first milestone. The daily equivalent shown can also help — sometimes '$17/day' feels more achievable than '$520/month' for budgeting purposes.
Does this calculator account for taxes on interest?
No — the calculator shows pre-tax growth. Interest earned in a standard savings account is taxable as ordinary income. To approximate after-tax returns, reduce the rate by your marginal tax rate. For example, if you're in the 22% bracket and earn 5% APY, enter roughly 3.9% (5% × 0.78) as the effective after-tax rate.

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