Trust Fund Monthly Income Calculator: Monthly Payout Over a Period
Work out the level monthly income a trust fund can provide over a chosen number of years — the amount that exhausts the balance by the end of the period while the remaining money keeps earning a return.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Monthly income | Total drawn | Growth while drawing |
|---|---|---|---|
| $500k · 5% · 20yr | $3,299.78 | $791,946.89 | $291,946.89 |
| $1M · 5% · 30yr | $5,368.22 | $1,932,557.84 | $932,557.84 |
| $250k · 4% · 15yr | $1,849.22 | $332,859.57 | $82,859.57 |
| $2M · 6% · 25yr | $12,886.03 | $3,865,808.41 | $1,865,808.41 |
How This Calculator Works
Enter the trust's balance, the return you expect its investments to earn, and how many years the income should last. The calculator finds the fixed monthly distribution that draws the balance to zero over that period, with the unspent balance still earning.
The Formula
Fixed-Period Drawdown
PV = savings pot, r = monthly rate (annual ÷ 12), n = number of monthly payments
Worked Example
A $500,000 trust earning 5%, paid out over 20 years, provides about $3,300 a month — roughly $792,000 in total distributions, far more than the starting balance because the unspent money keeps compounding. This is a simple level-payout model; a real trust's distributions are governed by its trust document, which may specify income-only payouts, discretionary distributions, age-based releases, or a fixed percentage instead of a level dollar amount.
Key Insight
A level drawdown is a useful way to size potential trust income, but a real trust is shaped by its legal terms and tax treatment, which this simplifies. The trust document is the controlling rulebook: some trusts distribute income only (preserving principal), some give the trustee discretion, some release funds at set ages or milestones, and some pay a fixed percentage of assets each year. Taxes matter and differ from personal accounts — trusts hit the top tax brackets at very low income thresholds, so undistributed income can be taxed heavily, which often pushes distributions out to beneficiaries who may be taxed at lower rates. Trustee fees and administration costs also reduce what's available. Use this figure as a planning baseline for what a balance could sustain, then defer to the trust document and a qualified advisor for how distributions actually work.
Frequently Asked Questions
How is the trust fund monthly income calculated?
It's the fixed monthly amount that draws the balance to zero over the chosen years while the remaining balance earns the expected return — the standard annuity-payout formula. A $500,000 balance at 5% over 20 years gives about $3,300 a month.
Does the trust document override this?
Yes. The trust's legal terms control actual distributions — they may specify income-only payouts, trustee discretion, age-based releases, or a fixed percentage of assets rather than a level dollar amount. This calculator estimates what a balance could sustain; the document determines what beneficiaries actually receive.
How are trust distributions taxed?
Differently from personal accounts. Trusts reach the top tax brackets at very low income levels, so income kept in the trust can be taxed heavily. Distributing income to beneficiaries often shifts the tax to them at potentially lower rates. Trust taxation is complex — consult a tax professional for specifics.
Why is total income more than the balance?
Because the unspent balance keeps earning while it pays out. A $500,000 trust at 5% over 20 years distributes about $792,000 total — the extra roughly $292,000 is the compounding on the money that hasn't yet been distributed.
What return should I assume?
A return matching how the trust is invested — often a balanced or conservative figure for funds being drawn down, since you can take less risk with money that's being distributed. Trustee fees and administration costs reduce the net return, so consider modeling a rate slightly below the gross investment return.
Related Calculators
Data Sources & Benchmarks
This calculator draws on 1 independent, dated source. The starting values for expected annual return are taken from the benchmarks below and refresh whenever the snapshots are updated.
Methodology & Review
The monthly income is the level amount that draws the balance to zero over the period, with the remaining balance earning a steady return. It is a fixed-payment drawdown; it does not model trust taxes, trustee fees, inflation adjustments, or distribution rules set by the trust document.
Written by Ugo Candido · Last updated May 22, 2026.