Charitable Remainder Unitrust Calculator

What This Calculator Does and Why It Matters

A Charitable Remainder Unitrust (CRUT) is a powerful estate and tax planning tool that lets you convert appreciated assets into a lifetime income stream while supporting a charity of your choice. It offers significant tax advantages — but understanding the numbers before you fund a trust is critical.

This free charitable remainder unitrust calculator helps you estimate your annual payouts, total income over the trust term, the charitable remainder that goes to charity, and a rough estimate of your upfront charitable deduction. You can model any trust term and payout rate to find the structure that works best for your situation.

Whether you are working with a financial advisor or exploring CRUTs on your own, this tool gives you a meaningful starting point to guide those conversations. It is not a substitute for professional estate planning counsel — but it helps you show up informed.

How to Use This Calculator

Step-by-Step Instructions

1. Enter the fair market value of the assets you plan to contribute to the trust. This is typically appreciated stock, real estate, or other property.
2. Enter the cost basis of those assets. The difference between FMV and basis represents the capital gains that would be bypassed by transferring the asset to the CRUT rather than selling it directly.
3. Set the annual payout rate. The IRS requires a minimum of 5% for a valid CRUT. Most CRUTs use 5% to 8%.
4. Enter the trust term in years. This can be a fixed number of years (up to 20) or life expectancy-based.
5. Enter your expected annual return on trust assets. A diversified portfolio might assume 5% to 7%.
6. Enter the current IRS §7520 rate, which is used to estimate your charitable deduction. This rate changes monthly and is published by the IRS.
7. Click Calculate CRUT to see your full summary.

The Formula Explained

Breaking Down the Formula

Unlike an annuity trust (CRAT), a unitrust recalculates the payout amount every year based on the current value of trust assets. This means your income can increase if the trust performs well — but it can also decrease in down years.

Each year, the payout is: Annual Payout = Current Trust Value × Payout Rate

After the payout, the remaining balance grows at the assumed return rate. At the end of the trust term, whatever is left passes to the designated charity. The charitable deduction is the present value of that charitable remainder, discounted using the IRS §7520 rate.

Example Calculation with Real Numbers

You contribute $500,000 of appreciated stock with a $100,000 cost basis into a 20-year CRUT with a 5% payout rate and 6% assumed return. Year 1 payout = $25,000. After paying $25,000, the trust grows at 6%, and the cycle repeats. Over 20 years, total payouts are approximately $580,000. The trust grows to roughly $510,000 in value at the end, which passes to charity. Using a 5% §7520 rate, the estimated charitable deduction would be approximately $190,000.

When Would You Use This

Real Life Use Cases

CRUTs are most commonly used by people who have highly appreciated, low-income-producing assets — like stock, real estate, or a business interest — and want to sell without paying a large capital gains tax bill all at once. By contributing the asset to the CRUT, the trust can sell it and redeploy the full proceeds into income-generating investments, spreading the capital gains recognition over time through the payout.

They are also used as part of retirement income planning, particularly for donors who want to leave a meaningful gift to a university, hospital, or foundation. For people already exploring retirement planning tools, our CRUT calculator works well alongside tools like the annuity payout calculator with inflation to compare income strategies.

Specific Example Scenario

A 65-year-old retiree owns $800,000 of appreciated farmland with a $50,000 cost basis. Selling directly would trigger roughly $114,000 in federal capital gains tax. Instead, they fund a 20-year CRUT at 5% payout with a 6% assumed return. They receive approximately $40,000 per year in income, bypass the immediate capital gains tax, and receive a charitable deduction worth roughly $300,000. Their designated university receives the remainder at the end of the term.

Tips for Getting Accurate Results

Use the Current IRS §7520 Rate

The §7520 rate is set monthly by the IRS and directly affects your charitable deduction estimate. A higher §7520 rate decreases the present value of the charitable remainder, which reduces the deduction. Always use the rate for the month you plan to fund the trust. Current and historical §7520 rates are published at IRS.gov's §7520 rate page.

Be Conservative with Your Return Assumption

It can be tempting to assume a high return rate to see a larger projected charitable remainder. However, because a CRUT's income is recalculated annually on the trust's actual value, a period of poor investment returns can significantly reduce your payouts. Most estate planners recommend using 5% to 6% as a conservative planning assumption. This gives a more realistic picture of what the trust can deliver over the long term.

Understand the 10% Minimum Remainder Requirement

The IRS requires that the present value of the charitable remainder be at least 10% of the initial fair market value contributed. If your combination of payout rate, term, and §7520 rate does not satisfy this test, the trust will not qualify as a valid CRUT. If your estimate shows a very low remainder, consider lowering the payout rate, shortening the term, or consulting with your attorney about structuring options. You can find the official IRS guidance on CRUTs in IRS Publication on Charitable Remainder Trusts.

If you are exploring other tax-advantaged strategies alongside a CRUT, our Roth IRA conversion tax calculator and QSBS stock gain exclusion tax benefit calculator may also be useful in your overall planning picture.

Frequently Asked Questions

What is a Charitable Remainder Unitrust?

A CRUT is an irrevocable trust where you contribute assets, receive an income stream based on a fixed percentage of the trust's value each year, and the remaining trust assets pass to a designated charity at the end of the term. It is governed by IRS rules and offers both income and charitable tax benefits to the donor.

What is the minimum payout rate for a CRUT?

The IRS requires a minimum annual payout rate of 5% for a CRUT to qualify. There is no set maximum, but the payout rate must be high enough that the present value of the charitable remainder is at least 10% of the original contribution. Very high payout rates can fail this 10% test, especially at longer terms.

How is a CRUT different from a CRAT?

A Charitable Remainder Annuity Trust (CRAT) pays a fixed dollar amount each year, regardless of investment performance. A CRUT pays a fixed percentage of the trust's current value, which changes each year. This means a CRUT has more income variability but can increase payouts if the trust grows well.

Can I contribute real estate to a CRUT?

Yes. Real estate is one of the most common assets contributed to CRUTs because it is often highly appreciated with a low cost basis. However, you must be careful not to have a contract to sell the property in place before contributing it — this can cause the capital gains tax to be recognized immediately rather than deferred.

Is the income from a CRUT taxable?

Yes. Income distributions from a CRUT are taxable to the recipient, but they are taxed in a tiered system based on the nature of the income inside the trust — ordinary income first, then capital gains, then tax-exempt income, then return of principal. This can spread capital gains recognition over many years, which is one of the main tax advantages of the strategy.

Can I name multiple beneficiaries in a CRUT?

Yes. A CRUT can have multiple income beneficiaries — for example, you and your spouse. The trust pays income to both beneficiaries during the term, and at the end, the remainder passes to charity. The charitable deduction calculation must account for all beneficiaries' ages and the expected payout term.

What charities can receive the remainder?

The charitable remainder beneficiary must be a qualified 501(c)(3) organization. This includes public charities, private foundations, donor-advised funds, and educational or religious institutions. You cannot name yourself, a family member, or a for-profit entity as the charitable remainder beneficiary.

Can I add more assets to a CRUT after it is set up?

Yes. A CRUT allows additional contributions after the initial funding, unlike a CRAT. Each additional contribution is treated separately for deduction calculation purposes using the §7520 rate in effect at the time of the additional contribution. This flexibility makes CRUTs appealing for ongoing charitable giving strategies.

Conclusion

A Charitable Remainder Unitrust can be an excellent vehicle for converting appreciated assets into income, reducing your tax burden, and making a meaningful gift to a cause you care about. Understanding the projected payouts, deduction, and charitable remainder before you commit helps you make a truly informed decision.

Use this free CRUT calculator as an educational starting point. Then work with a licensed estate planning attorney or CPA to design the trust structure that fits your goals, your tax situation, and the charities you wish to support.