"Save more next year" is the classic resolution — and the classic one to fail by February. What works is a specific number: an amount, a deadline and a monthly transfer. Here's how to work it out.

Step 1: Pick the goal and the deadline
Be concrete: "$6,000 for an emergency fund by December 2027" or "$10,000 house deposit in three years". The amount and the time decide everything else.
Step 2: Divide — then let interest help
Without interest, it's simple division:
- $6,000 in 12 months = $500 a month
- $10,000 in 36 months = $278 a month
With a savings account paying interest, you need a little less, because your money earns while it waits. At 4% a year compounded monthly:
- $6,000 in 12 months needs about $491 a month
- $10,000 in 36 months needs about $262 a month
The formula, if you're curious: monthly amount = goal × r ÷ ((1 + r)ⁿ − 1), where r is the monthly rate (4% ÷ 12) and n the number of months.
Step 3: Check it with the calculator
- Open the free Compound Interest Calculator.
- Enter 0 as the starting amount and your planned monthly contribution.
- Enter the interest rate and the number of years.
- Adjust the monthly amount until the future balance reaches your goal.

What small amounts become
At $200 a month:
- 5 years at 4%: $13,260 — $12,000 saved plus $1,260 interest.
- 10 years at 7%: $34,617 — $24,000 saved plus $10,617 growth.
- 30 years at 7%: $243,994 — $72,000 saved; the rest is compounding.
Investment returns aren't guaranteed and these figures ignore tax, fees and inflation — but they show why starting early matters more than starting big.
Make it stick
- Automate it: schedule the transfer for the day after payday.
- Use a separate account so the money isn't spent by accident.
- Track progress monthly; the Percentage Calculator tells you you're "37% there".
- Paying off debt first? High-interest debt usually beats saving. See what a loan really costs with the Loan Calculator.
FAQ
What's a good savings rate? A common guide is 10–20% of take-home pay, starting with an emergency fund of three to six months' expenses.
Monthly or yearly compounding — does it matter? A little. Monthly compounding earns slightly more than yearly at the same rate. Try both in the calculator.
Try it now
Plan your 2027 goal with the free Compound Interest Calculator, and see the New Year countdown.
Related reading
See How to Calculate Percentage Increase and How to Calculate a Percentage. Browse the full blog for more guides.