All tools Checked August 26, 2026

Estate & Trusts calculator

Charitable Lead Trust Calculator

How much may go to charity, and how much may remain for family?

Estimate payments to charity and what may remain for family.

How to use it

Start with the numbers you know.

Estimates are okay. Nothing is submitted when you calculate.

What this calculator estimates

Estimate payments to charity and what may remain for family.

Question-mark icons explain less-obvious terms. Hover, focus, or tap them for plain-English help.
Trust setup
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years
Charity payments
A CLAT generally pays a fixed annuity amount. A CLUT pays a percentage of trust value that is remeasured each year.
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Select the valuation month. For a charitable transfer, confirm any permitted prior-month election with your tax advisor. For other months, verify and enter the rate yourself.
This is called the Section 7520 rate.
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Published rate for 2026-09: 5.40%, effective 2026-09-01. IRS Revenue Ruling 2026-17. Confirm the correct valuation month and any allowed election before filing.

Adjust assumptions

Defaults are prefilled. Review returns, timing, costs, and rates before relying on this estimate.

Growth estimate
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Start with the decision

How much may go to charity, and how much may remain for family?

A charitable lead trust pays charity first for a stated term, with any remaining property passing to family or other noncharitable beneficiaries. The economics depend on the payment design, trust return, Section 7520 rate, term, tax character, and whether the trust is structured as a grantor or nongrantor trust.

Before you act on the number

See what the result means—and what could change it.

01

How to read it

  • The charitable present value is a valuation estimate, not necessarily the donor’s current income-tax deduction.
  • The projected family remainder is most sensitive to return timing, expenses, taxes, and the payout structure.
  • CLAT and CLUT designs behave differently: fixed annuity payments create different risk than annually revalued unitrust payments.
02

What could change the answer

  • Exact IRS actuarial computations, mortality contingencies, or graduated payment provisions
  • Grantor-versus-nongrantor income-tax consequences
  • Private-foundation rules, unrelated business income, excess business holdings, or self-dealing
  • Trust drafting, charitable eligibility, administration, or tax-return preparation
03

What to take forward

Use the result to identify which assumption needs verification, then bring that question to the professional helping you make the decision.

Transparent method

How the estimate works

See how the estimate is calculated

Calculate the annual lead payment as either a fixed annuity amount or a unitrust percentage of annually revalued assets.

Discount the charitable payment stream using the current Section 7520 framework to illustrate the lead interest’s present value.

Project trust growth and payments over the selected term to estimate the noncharitable remainder, if any.

Common questions

Frequently asked questions

CLAT vs CLUT: what is the difference?

A CLAT generally pays a fixed annuity amount, while a CLUT pays a fixed percentage of trust assets revalued annually. Their charitable payments and remainder volatility can differ significantly.

Why does the Section 7520 rate matter?

The rate helps value the charitable lead and noncharitable remainder interests. When actual net growth exceeds the valuation hurdle, more value may remain for the remainder beneficiaries.

Grantor vs. non-grantor charitable lead trust: what changes?

In a grantor CLT, the person who creates the trust may take an up-front income-tax charitable deduction for the present value of the charity's payments, but then reports the trust's income on their own return every year. In a non-grantor CLT, there is no up-front income-tax deduction for the creator; the trust is its own taxpayer and generally deducts the amounts it pays to charity. In both, the gift- or estate-tax value of the family remainder is reduced by the present value of the charity's interest, which is what this calculator illustrates. A tax professional should confirm which design fits.

Does every charitable lead trust create an income-tax deduction?

No. The answer depends on whether the trust is a grantor trust, the recipient charities, the payment terms, and other tax rules. Gift- and estate-tax results are separate from income-tax treatment.

Can a charitable lead trust run out of assets?

Yes. Investment losses, fees, taxes, and an aggressive payout can exhaust or sharply reduce the trust, especially under a fixed annuity design.

Sources

Rules and references behind this calculator

See every published value
Method referenceIRS: Section 7520 actuarial tablesPublic source used to define this calculator's method and limitsOpen source