§ Tools / Series 03 · Personal finance
Education savings calculator
One question: how much do I need to invest every month so my child's education is funded? Inflation-realistic future cost, year-by-year tuition schedule, required monthly contribution split into principal vs. investment growth. No 529-specific assumptions, no country tax overlay — the math stays globally valid and every input is editable.
§ Not personalized advice
Country tax rules and account vehicles (529, RESP, ESA, Sukanya Samriddhi, etc.) are intentionally out of scope. Education inflation and investment returns are assumptions, not guarantees — the sensitivity grid is there to show how much that matters.
5
Engines
3
Modes
8
Cost presets
5×5
Sensitivity
v1
Methodology
Mode
Education goal
$1,377 / month
to fund $523,181 by age 18 (15 years from now)
Future cost (year 1)
$143,793
today's $60,000 × inflation
Corpus needed at start
$523,181
4-yr stream, discounted
Existing savings (future value)
$18,212
grown 15 yrs @ 9%
Funding gap
$504,969
to solve via contributions
Your contributions, total
$247,913
49% of gap
Investment growth, total
$257,056
does the rest of the work
§ Where the money comes from
Your contributions $247,913 (49%) Investment growth $257,056 (51%)
Compounding does 51% of the work over 15 years at 9%.
§ Accumulation path
Y0
age 3Y2
age 5Y4
age 7Y6
age 9Y8
age 11Y10
age 13Y12
age 15Y14
age 17
age 3Y2
age 5Y4
age 7Y6
age 9Y8
age 11Y10
age 13Y12
age 15Y14
age 17
Portfolio balance Principal only
§ Education cost schedule
4-year program · inflated cost, aid offset, net cost per year
| Year | Age | Years from today | Gross cost | Aid offset | Net cost |
|---|---|---|---|---|---|
| Y1 | 18 | 15 | $143,793 | −$7,790 | $136,004 |
| Y2 | 19 | 16 | $152,421 | −$8,024 | $144,398 |
| Y3 | 20 | 17 | $161,566 | −$8,264 | $153,302 |
| Y4 | 21 | 18 | $171,260 | −$8,512 | $162,748 |
| Total | $629,041 | −$32,590 | $596,452 | ||
§ Scenarios
What if returns disappoint, or inflation runs hot?
Conservative
$1,989/mo
return -2pp · infl +1pp
gap $618,917
Base case
$1,377/mo
return +0pp · infl +0pp
gap $504,969
Aggressive
$1,028/mo
return +2pp · infl -0.5pp
gap $445,398
§ Sensitivity
Required monthly contribution by return × education inflation
| Education inflation → | |||||
|---|---|---|---|---|---|
| ↓ Return | 4.0% | 5.0% | 6.0% | 7.0% | 8.0% |
| 6.0% | $1,319 | $1,569 | $1,859 | $2,195 | $2,584 |
| 7.5% | $1,134 | $1,351 | $1,602 | $1,893 | $2,230 |
| 9.0% | $972 | $1,160 | $1,377 | $1,629 | $1,920 |
| 10.5% | $831 | $993 | $1,181 | $1,398 | $1,650 |
| 12.0% | $707 | $847 | $1,009 | $1,197 | $1,414 |
§ Formula trace
- yearsUntilStart = startAge − childAge = 18 − 3 = 15
- futureCost_y1 = presentCost × (1 + eduInfl)^years = 60000 × (1 + 0.060)^15 = 143793.49
- schedule[2..4] inflate at +6.00% each year of program (during-prog inflation = 6.00%)
- corpusNeeded = Σ netCost_y / (1 + retDuring)^y for y=0..3 = 523181.28
- currentSavingsFV = currentSavings × (1 + retBefore)^15 = 18212.41
- fundingGap = max(0, corpusNeeded − existingFV) = max(0, 523181.28 − 18212.41) = 504968.87
- annuityFactor = 366.6385 (r=0.7207%/period, n=180, end)
- requiredPMT = fundingGap / annuityFactor = 1377.29
§ Input audit
aidInflPctused
annualAidused
childAgeused
costModeused
currencyused
currentSavingsused
durationused
eduInflPctused
feeDragPctunused
frequencyused
fundingPctused
inflDuringPctunused
lumpSumNowused
presentCostused
returnBeforePctused
returnConventionunused
returnDuringPctunused
startAgeused
stepUpPctunused
timingused
unitused
§ Warnings
- Multi-year programs use the same return rate during the program in Simple/Guided. Use Advanced for a different during-program return.
§ Same engine, headlessly
Five engines (cost, aid offset, contribution solver, scenarios, sensitivity) reachable as a stateless REST endpoint and as MCP tools, with a versioned methodology stamp.
POST/api/v1/financial-calculators/education-savings/calculate
GET/api/v1/financial-calculators/education-savings/schema
GET/api/v1/financial-calculators/education-savings/defaults
GET/api/v1/financial-calculators/education-savings/education-cost-presets?region=IN&type=engineering
GET/api/v1/financial-calculators/education-savings/model-portfolios · professional+
GET/api/v1/financial-calculators/education-savings/ticker-defaults?symbol=SPY&lookback_years=10 · professional+
MCP tools
calculate_education_savingscalculate_child_education_monthly_investmentget_education_savings_defaultsget_education_savings_market_defaultsexplain_education_savings_formulamethodology_version = financial-calculators.v1 · canonical = /en/tools/education-savings-calculator
§ FAQ
Four things worth knowing
Q01How much will college actually cost in 18 years?+
Sticker price today × (1 + education inflation)^years. Education inflation has run materially faster than CPI in most regions (the calculator defaults to 6% globally, 5% US public, 8% India engineering). The Future Cost tile shows the inflation-adjusted figure — typically 2-3× the present sticker — and that's the only honest number to plan against.
Q02Why does the answer change so much when I move the inflation knob?+
Because compounding works both directions. A $60,000 program at 6% inflation over 18 years grows to $171k; at 8% inflation it grows to $240k. The required monthly contribution moves roughly in proportion. The sensitivity grid (return × inflation, 5×5) shows the full picture so you can see how sensitive the plan is to that one assumption.
Q03Why is my "already saved" amount not subtracted from the future cost?+
It is — but at its future value, not its present value. Current savings + any lump sum today are grown forward to start age at your expected return (net of fee/tax drag). The required monthly contribution is then solved for the residual gap. So the headline number already accounts for what you have.
Q04What does "advanced" actually unlock?+
Three things that the simple/guided defaults paper over. (1) A separate return assumption during the program — your portfolio shouldn't be 100% equity while you're paying tuition. (2) Annual step-up — a contribution that grows with your raises, which materially lowers the starting monthly number. (3) Fee/tax drag — typical 30–80 bps that the math should reflect honestly. Every advanced input is editable; nothing is silently assumed.