Perpetual Care Fund Calculator
Fund target from maintenance budget and interest.
About this calculator
Perpetual care (endowment care) funds exist because a cemetery has to be maintained forever, but its plot sales eventually run out — so most US states require cemeteries to set aside a share of every sale into an invested fund whose income, not its principal, pays for mowing, roads, drainage, and upkeep indefinitely. This calculator's core idea is the endowment math behind that requirement: it multiplies your acreage by a per-acre maintenance cost to get an annual budget, then divides that budget by your safe withdrawal rate to find the fund balance that could sustainably cover it forever without ever touching principal — a $200,000 annual need at a 4% withdrawal rate implies a $5 million target, for instance. The funding gap and funded percentage compare your current balance against that target, while a separate "safe withdrawal" figure shows what your existing balance can sustainably support today, exposing any shortfall against the actual maintenance budget.
The years-to-target projection runs an actual year-by-year simulation, compounding your current balance at the real return (expected return minus inflation) and adding your annual contribution each year until the balance clears the target, capping at 200 years and flagging the goal as unreachable if contributions or real return are too low ever to get there. A separate 10-year nominal projection uses the un-adjusted expected return and nets out the full maintenance draw each year, which can show a declining or zero balance even while the "years to target" figure looks achievable in real terms — the two projections answer different questions and shouldn't be read as contradicting each other.
Inputs
Results
Perpetual fund target ($)
$200,000.00
≈ 13 used cars
Funding gap ($)
$100,000.00
≈ 9 years of state college
How to Use This Calculator
- Enter cemetery acreage and annual maintenance cost per acre.
- Set expected investment return (%), safe withdrawal rate (%), current fund balance, and annual contribution.
- Enter inflation rate (%).
- Review Perpetual Fund Target, Funding Gap, Funded (%), and Current Annual Investment Income.
- Aim to fully fund the perpetual care target before the cemetery reaches capacity.
How the result changes with Safe withdrawal rate %
| Safe withdrawal rate % | Perpetual fund target ($) | Funding gap ($) |
|---|---|---|
| 2 | $400,000.00 | $300,000.00 |
| 3 | $266,667.00 | $166,667.00 |
| 6 | $133,333.00 | $33,333.00 |
| 8 | $100,000.00 | $0.00 |
What each input means
- Cemetery acreage
- Total maintained cemetery acreage.
- Maintenance cost per acre ($/yr)
- Annual per-acre maintenance cost (mowing, landscaping, roads, etc.).
- Expected investment return %
- Expected annual return on endowment investments.
- Safe withdrawal rate %
- Annual withdrawal rate from endowment (3-5% is standard).
- Current fund balance ($)
- Current perpetual care fund balance.
- Annual contribution ($)
- Annual new money added to the fund from plot sale set-asides.
- Inflation rate %
- Expected annual inflation rate for real-return calculation.
What each result means
- Annual maintenance needed ($)
- Total yearly maintenance budget for the cemetery.
- Perpetual fund target ($)
- Endowment balance needed to fund maintenance forever at the safe withdrawal rate.
- Funding gap ($)
- Additional money needed to reach the perpetual care target.
- Funded %
- Current fund balance as a percentage of the target.
- Current investment income ($)
- Annual income from current fund at expected return rate.
- Safe annual withdrawal ($)
- Sustainable annual withdrawal from current balance.
- Annual shortfall ($)
- Gap between maintenance budget and sustainable withdrawal.
- Years to reach target
- Estimated years to reach full funding (-1 if unreachable).
- 10-year projected balance ($)
- Fund balance in 10 years with contributions, returns, and withdrawals.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersCemetery acreage = 20, Maintenance cost per acre ($/yr) = 400, Expected investment return % = 5, Safe withdrawal rate % = 4 = 7 input(s) provided
- Calculate Perpetual fund targetPerpetual fund target = annualMaintenanceBudget / (withdrawalRatePct / 100)200000 = $200,000
- Calculate Funding gapFunding gap100000 = $100,000
- Calculate Annual maintenance neededAnnual maintenance needed = totalAcreage * maintenanceCostPerAcre8000 = $8,000
- Calculate Funded %50 = 50%
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why do the 'years to target' and '10-year projected balance' figures sometimes seem to disagree?
They answer different questions using different assumptions. Years to target compounds your balance at the real return (expected return minus inflation) and adds your annual contribution, stopping once the balance clears the perpetual fund target — it never subtracts a maintenance draw. The 10-year balance instead uses the un-adjusted nominal expected return and nets out the full annual maintenance budget every year, so it can show a shrinking or zero balance even while the real-return years-to-target projection looks achievable.
How is the perpetual fund target calculated, and why does a small change in withdrawal rate move it so much?
The target is your annual maintenance budget (acreage times per-acre maintenance cost) divided by your safe withdrawal rate expressed as a decimal. Because withdrawal rate is in the denominator, small changes have an outsized effect: a $200,000 annual need implies a $5 million target at a 4% withdrawal rate, but a $6.67 million target at 3% — lowering the withdrawal rate (a more conservative assumption) raises the fund target substantially.
What does it mean if 'years to reach target' shows -1?
A -1 means the goal is flagged as unreachable under your current inputs: either your current balance already can't catch up within 200 simulated years at the given real return and annual contribution, or your annual contribution is zero (or your real return, i.e. expected return minus inflation, is zero or negative) so the balance can never close the gap through growth and contributions alone.
Why is the perpetual care fund target based on withdrawal rate rather than just the expected investment return?
The withdrawal rate represents what can be sustainably drawn out each year without eroding the principal over time — it's typically set below the expected return (3-5% vs. an expected 5%+) specifically so the fund can weather down markets and inflation without shrinking. Using the higher expected-return rate as the divisor would understate the true target and risk the fund running dry when real returns fall short of the average expectation.
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