Retirement Savings Calculator

Compare your planned savings at retirement with a target you enter in today’s purchasing power. Explore fixed assumptions, not a retirement forecast or recommendation.

Illustrative example — edit the inputs to explore your own assumptions.

Your inputs

Current age (years)

Enter an integer from 18 to 100.

Target retirement age (years)

Enter an integer from 18 to 100, at or after your current age and no more than 50 years away.

Current invested savings

Current principal available for this accumulation scenario, from 0 to 1 trillion.

Planned month-end contribution

A fixed nominal amount added at each month end, from 0 to 1 trillion. It does not rise with inflation.

Assumed effective annual return (%)

Enter your own fixed assumption from −10% to 100%. The example is not a recommended return.

Assumed annual inflation (%)

Fixed purchasing-power assumption from −5% to 20%; not a forecast.

Your retirement target (today’s money)

Enter your own target in today’s purchasing power, from 0 to 1 trillion. This is not annual retirement income.

Display currency

Display only; no exchange-rate conversion.

Inputs stay in this page’s memory. They are not saved or added to the URL. Refreshing resets the form.

Calculation results

Last calculated scenario: 35 years to retirement. All amounts use USD; future money and today’s purchasing power are labeled separately.

Current age (years): 30
Target retirement age (years): 65
Current invested savings: 50000
Planned month-end contribution: 500
Assumed effective annual return (%): 6
Assumed annual inflation (%): 3
Your retirement target (today’s money): 1000000

Balance at retirement (future nominal money): $1,071,106.33
Balance at retirement (today’s purchasing power): $380,653.41
Your target at retirement (future nominal money): $2,813,862.45
Your target (today’s purchasing power): $1,000,000.00
Balance minus target (future nominal money): -$1,742,756.13
Balance minus target (today’s purchasing power): -$619,346.59
Planned total monthly contribution (fixed nominal money): $500.00
Required total monthly contribution (fixed nominal money): $1,768.75
Additional monthly contribution above your plan (fixed nominal money): $1,268.75

The required monthly amount is the total contribution from now, not an amount to add to your existing plan. Additional contribution is the non-negative difference. Calculations use unrounded values; displayed amounts are rounded and may not exactly reproduce the target.

A negative balance-minus-target difference is a shortfall; a positive difference is an excess under these assumptions. Neither indicates retirement readiness or an action to take.

Planned contributions only: annual accumulation, including the current age. Future balances and contributions are nominal; purchasing power is in today’s money.
Age (years)	Total contributed (nominal)	Balance (future nominal money)	Balance (today’s purchasing power)
30	$50,000.00	$50,000.00	$50,000.00
31	$56,000.00	$59,163.26	$57,440.06
32	$62,000.00	$68,876.32	$64,922.54
33	$68,000.00	$79,172.17	$72,453.75
34	$74,000.00	$90,085.76	$80,040.03
35	$80,000.00	$101,654.17	$87,687.78
36	$86,000.00	$113,916.69	$95,403.43
37	$92,000.00	$126,914.95	$103,193.47
38	$98,000.00	$140,693.11	$111,064.44
39	$104,000.00	$155,297.96	$119,022.96
40	$110,000.00	$170,779.11	$127,075.69
41	$116,000.00	$187,189.12	$135,229.40
42	$122,000.00	$204,583.73	$143,490.91
43	$128,000.00	$223,022.02	$151,867.14
44	$134,000.00	$242,566.60	$160,365.10
45	$140,000.00	$263,283.86	$168,991.89
46	$146,000.00	$285,244.16	$177,754.73
47	$152,000.00	$308,522.07	$186,660.93
48	$158,000.00	$333,196.66	$195,717.92
49	$164,000.00	$359,351.72	$204,933.27
50	$170,000.00	$387,076.09	$214,314.65
51	$176,000.00	$416,463.92	$223,869.88
52	$182,000.00	$447,615.02	$233,606.92
53	$188,000.00	$480,635.18	$243,533.88
54	$194,000.00	$515,636.56	$253,659.02
55	$200,000.00	$552,738.02	$263,990.76
56	$206,000.00	$592,065.56	$274,537.68
57	$212,000.00	$633,752.76	$285,308.56
58	$218,000.00	$677,941.19	$296,312.33
59	$224,000.00	$724,780.93	$307,558.15
60	$230,000.00	$774,431.05	$319,055.34
61	$236,000.00	$827,060.17	$330,813.44
62	$242,000.00	$882,847.05	$342,842.20
63	$248,000.00	$941,981.13	$355,151.61
64	$254,000.00	$1,004,663.27	$367,751.86
65	$260,000.00	$1,071,106.33	$380,653.41

Results use the stated assumptions and model. They are educational, not financial advice or predictions.

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How this accumulation model works

For y years, n = 12y, effective annual return g and month-end contribution C, i = (1 + g)^(1/12) − 1 and FV = P(1 + i)^n + C × ((1 + i)^n − 1)/i. At zero return, FV = P + nC. Rates in these formulas are decimals.

Your target T is entered in today’s money. Its future nominal value is T × (1 + inflation)^y; the planned balance in today’s purchasing power is FV divided by the same factor. Required total monthly contribution uses the same month-end model with that nominal target, returning zero when the principal alone is sufficient at the end date. For a zero-year span, no monthly amount is solved.

Illustrative example: current age 30, retirement age 31, current savings 0, monthly contribution 500, return 0%, inflation 0% and today’s target 12,000. The planned balance is 6,000, the balance-minus-target difference is −6,000, required total monthly contribution is 1,000 and additional monthly contribution is 500. Currency selection changes display only.

Hypothetical educational calculations, not financial advice or predictions. This model only accumulates savings to a chosen age. It does not calculate retirement success probability, spendable income or withdrawals; it excludes Social Security, pensions, Roth IRA/401(k) rules, contribution limits, fees and taxes. It does not recommend an age, savings rate or investment return.

FAQ

Is this a retirement income or success calculator?

No. It compares accumulated savings with your own target under fixed assumptions. It does not simulate withdrawals, benefits, account rules or the chance that money will last.

How are inflation and monthly contributions treated?

Your target is in today’s purchasing power and is inflated to the retirement date. Contributions stay fixed in nominal money and occur at month end. The effective annual return is converted to an equivalent monthly rate.

What happens when the target is already covered or retirement is today?

If current principal alone grows to the target at the end date, required monthly contribution is zero. With zero years remaining, the calculator shows only the current balance and target difference and does not divide by zero to solve a monthly amount.

Explore related savings questions

Use the goal tool for a nominal savings target, or review the original investment calculator and its method.