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Savings Goal Calculator

✦ Finance & Money

Use this free savings goal calculator to find exactly how much you need to save each month, week or paycheck to reach any target by a date you choose — and to see how long your current savings rate will take.

  • ✓ Calculated in your browser
  • ✓ Nothing you type is stored
  • ✓ No sign-up required
  • ✓ Formula and sources shown

The formula

Monthly saving required to reach a savings goal

PMT = (A − P × GF) × (r/12) / (GF − 1)
where GF = (1 + r/12)^T
At r = 0: PMT = (A − P) / T
Weekly = PMT × 12/52  |  Biweekly = PMT × 12/26

A = target amount, P = current savings, T = months to deadline, r = nominal annual rate credited monthly, GF = growth factor. Deposits are made at the end of each month (ordinary annuity) unless Advanced switches them to the start, which divides PMT by (1 + r/12). The weekly and biweekly figures are arithmetic equivalents of the monthly amount — the same total saved per year — not a separate periodic-contribution formula. At r = 0 the formula simplifies to PMT = (A − P) / T.

Calculating it by hand

  1. Enter your target amount — the total you want to save.
  2. Enter your current savings (the "head start" you already have).
  3. Set the deadline as a calendar date or a number of months.
  4. Enter your account's nominal annual interest rate; the 0.5% default is an illustration, not a quote. Use 0 for a cash jar.
  5. Read the required monthly saving from the result panel — the weekly and per-paycheck equivalents are shown beside it.
  6. To find how long a fixed amount takes, switch the tabs to "When I'll get there" and enter your monthly saving.
  7. Open Advanced to switch deposits from the end of the month to the start.

Worked examples

Save $20,000 in 2 years from $2,000 at 3% APR

  1. Enter target $20,000, current $2,000, deadline 24 months, rate 3%.
  2. GF = (1 + 0.03/12)^24 = 1.0025^24 = 1.061757
  3. P × GF = 2,000 × 1.061757 = $2,123.51; remaining = 20,000 − 2,123.51 = $17,876.49
  4. Annuity factor = (GF − 1) / (r/12) = 0.061757 / 0.0025 = 24.7028
  5. PMT = 17,876.49 / 24.7028 = $723.66/month
  6. Weekly = 723.66 × 12/52 = $167.00; biweekly = 723.66 × 12/26 = $334.00
  7. Deposits total 24 × 723.66 = $17,367.88; interest earned = 20,000 − 2,000 − 17,367.88 = $632.12

Required monthly saving: $723.66. Weekly equivalent: $167.00. Per paycheck (biweekly): $334.00. Interest earned: $632.

Emergency fund: $9,000 in 6 months from $0 at 0%

  1. Rate = 0%, so PMT = (A − P) / T
  2. PMT = (9,000 − 0) / 6 = $1,500/month
  3. Weekly = 1,500 × 12/52 = $346.15
  4. Biweekly = 1,500 × 12/26 = $692.31

Required monthly saving: $1,500.00. Weekly: $346.15. Per paycheck: $692.31. No interest — pure contributions.

How long to reach $10,000 at $300/month from $1,000 at 2% APR?

  1. Switch to "When I'll get there"; enter target $10,000, current $1,000, monthly saving $300, rate 2%.
  2. Monthly rate r = 0.02/12 = 0.0016667; PMT/r = 300 / 0.0016667 = 180,000
  3. (target + PMT/r) / (current + PMT/r) = 190,000 / 181,000 = 1.04972
  4. T = ln(1.04972) / ln(1.0016667) = 0.048524 / 0.0016653 = 29.14 months, rounded up to 30
  5. Date reached: the first of the month 30 months from today

At $300/month from $1,000 at 2%, the $10,000 goal is reached in month 30.

Methodology

How savings goals actually work

The interest rate matters far less than most people expect — on a 2-year, $10,000 goal the gap between 0% and 4% is about $16 a month. What really determines whether a goal is reachable is the gap between your target, your head start and your deadline.

Read sources and limits

How do you calculate how much to save each month?

The formula behind any savings goal is the ordinary annuity equation solved in reverse. A standard savings projection asks: "if I save PMT per month at rate r for T months, what do I end up with?" The goal calculator flips that: "I know the target A and the time T — what does PMT need to be?"

The growth factor GF = (1 + r/12)^T tells you how much your current savings will grow on their own. Your target, minus that grown amount, is the remaining gap the monthly contributions must cover. That gap, divided by the annuity factor [(GF − 1)/(r/12)], is your required monthly payment.

At r = 0 (a jar or zero-interest account), the arithmetic simplifies to PMT = (target − current) / months. This is exact. The formula and the zero-rate case are both shown in the formula section above so you can verify any result by hand.

Should you set the deadline as a date or a number of months?

The "Calendar date" option converts a date to a whole number of months from today. A target date exactly 8 months away counts as 8 months; one 8 months and 10 days away counts as 9. The page always rounds up to the nearest whole month so your contributions cover the full period.

If you prefer to think in months directly — "I want to reach this goal in 18 months" — choose "Number of months". Both inputs feed the same formula; the date picker just does the subtraction for you.

The named presets (emergency fund, house down payment, car, trip) switch to month mode and pre-fill a typical horizon. They are illustrative starting points — update the target amount to match your real numbers. For the house down payment, the Down Payment Calculator helps you find the exact figure your situation requires.

How are the weekly and biweekly amounts worked out?

Weekly and biweekly figures on this page are arithmetic conversions: weekly = monthly × 12/52, biweekly = monthly × 12/26. They are not computed from a separate periodic-contribution formula. This means they are proportionally correct (the annual total is the same) but not exact in the sense that a 52-payment-per-year annuity formula would give.

For planning purposes, the difference is trivial. If you save $192.30 every two weeks (biweekly) versus $416.67 each month, you save the same $5,000 per year either way. The only real difference is timing: biweekly payments reach the account a little sooner each cycle, which would earn fractionally more interest. At a 2% APR over 2 years, that difference is under $5.

The page states this convention beside the result so the assumption is transparent. If you want the exact biweekly-annuity result, set the monthly amount to (biweekly × 26/12) and run the calculation.

How much should you save for an emergency fund?

An emergency fund is a reserve for essential expenses — rent or mortgage, utilities, food, insurance and minimum debt payments. The CFPB's emergency-fund guide says the right size depends on your situation; a common rule of thumb is 3 to 6 months of those expenses, so a household spending $3,000 a month would aim for $9,000 to $18,000.

The "Emergency fund" preset starts at 3 months of $3,000; update both figures for your own budget.

The right horizon for an emergency fund is typically 3 to 12 months, not years — the goal is to build it quickly enough that it is there when you need it. A 6-month horizon at $9,000 with no interest requires $1,500 a month. A 12-month horizon requires $750 a month. Neither is "better"; the right answer is the one you can actually maintain.

Once the fund is in place, the same calculator works for any goal: a house down payment (use the Down Payment Calculator for the exact target), a car, a vacation, or any purchase with a known cost and a date you care about.

What does this savings goal calculator not model?

The interest rate is held constant. A high-yield savings account (HYSA) resets its rate when the Federal Reserve moves, so a 4.5% rate today may be 3.5% in a year. For variable-rate accounts, running the calculation at a range of rates (e.g. 2%, 4%, 5%) brackets realistic outcomes. The worst-case is r = 0: no interest, just contributions.

Tax is not modelled. Interest on a taxable savings account is ordinary income taxed in the year credited. At a 22% marginal rate, a 4% APY account has an after-tax yield of about 3.12%. To model on an after-tax basis, enter 3.12% as the rate.

This calculator provides illustrative estimates based on the assumptions you enter. It is not financial or investment advice. Results assume equal monthly contributions, a constant rate and no withdrawals. Actual amounts will differ. Sources: CFPB "Your Money, Your Goals"; FDIC savings account guidance; Investor.gov compound interest formula.

Savings Goal questions

How do I calculate how much to save each month?

Use the annuity formula rearranged for the payment: PMT = (Target − Current × GF) × (r/12) / (GF − 1), where GF = (1 + r/12)^T and T is the number of months. At 0% interest, PMT = (Target − Current) / T. Enter your target, current savings, deadline and rate into the calculator and it computes PMT automatically, along with weekly and biweekly equivalents.

How long does it take to save $10,000?

At $300/month with no interest: $10,000 / $300 = 33.3 months, so about 34 months. At $500/month: 20 months. At $1,000/month: 10 months. At 4% APR interest brings the $300-a-month case down to 32 months, while the $500 and $1,000 cases still take 20 and 10 months, because the balance is small for most of the time. Enter your own monthly amount on the "When I’ll get there" tab to see the exact month.

What is a good savings goal?

One with a number and a date: an emergency fund (a common rule of thumb is 3–6 months of essential expenses), a short-term purchase in 1–3 years (a car, a trip, a course), or a long-term target 3+ years out (a house down payment, a wedding, education). There is no universally "good" amount; the CFPB's guidance is to tie the goal to a specific need and a timeline you can keep given your income and expenses.

How much should I save for an emergency fund?

A common rule of thumb is 3 to 6 months of essential expenses — rent or mortgage, utilities, food, minimum debt payments and insurance; the CFPB's guide says the right amount depends on your own situation. For a household spending $3,000 a month on essentials, 3 to 6 months is $9,000 to $18,000. Use the emergency fund preset (3 months × $3,000 in 6 months = $1,500 a month) as a starting point and update it for your own budget.

How long does it take to save for a house down payment?

A typical 5% down payment on a $300,000 house is $15,000; 20% is $60,000. At $600/month with no interest, the 5% down takes 25 months and the 20% down takes 100 months. Use the Down Payment Calculator to determine the exact target for your price range, then enter it here to find the monthly saving. Your current savings reduce the required contribution by the amount they will grow to at your account's rate.

Does the interest rate matter much for short savings goals?

Not much. On a 1-year, $10,000 goal from $0, the monthly saving is $833.33 at 0% and $818.17 at 4% — $15.16 a month apart. On the same goal over 2 years it is $416.67 against $400.92, a $15.75 gap. Interest matters more on long goals (5+ years) and large balances; for goals under two years the rate is almost irrelevant, which is why the 0.5% default is only an illustration.

How do I save $1,000 in 3 months?

At 0% interest, PMT = $1,000 / 3 = $333.33/month, or about $76.92/week. Enter Target $1,000, Current $0, 3 months, 0% in the calculator to confirm. If you already have $400 saved, the required saving drops to $600 / 3 = $200/month. Each dollar of current savings reduces the required monthly amount proportionally.

What is the difference between weekly, biweekly and monthly saving amounts?

All three represent the same annual total. Monthly = the annuity-formula result. Weekly = Monthly × 12/52. Biweekly (per paycheck) = Monthly × 12/26. These are proportional conversions, not separate annuity calculations — they assume you save the same total per year regardless of cadence. The slight gain from more frequent deposits is real but small enough to ignore for planning purposes.

Source notes

Method, sources & limitations

Every figure on this page comes from the formula above applied to the values you enter. Nothing is estimated from market data, and no result is a forecast. These are the sources behind the method and any fixed figures it uses:

Written and maintained by CalculatorManager Editorial, Editorial team. Figures last verified .

Educational information only. Results are estimates produced from the assumptions you enter, and are not financial, tax, legal or medical advice. Check anything that matters against a qualified professional and the cited sources.

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