Form 1041 Schedule G: tax computation and payments for estates and trusts

“For tax years beginning in 2025, figure the tax using the following Tax Rate Schedule and enter the tax on line 1a.” IRS, Instructions for Form 1041 (2025)

What is Form 1041 Schedule G?

Form 1041 Schedule G is the part of the estate and trust return where the fiduciary figures the total tax and totals the payments. Schedule G sits on pages 2 and 3 of the 2025 Form 1041 and has two parts:

• Part I, tax computation (lines 1a to 9): regular tax, lump-sum distribution tax, alternative minimum tax and Form 4255 amounts on lines 1a to 1e, credits on lines 2a to 2e, then the ESBT tax, net investment income tax, recapture taxes, household employment taxes and other taxes on lines 4 to 8
• Part II, payments (lines 10 to 19): estimated tax, amounts allocated to beneficiaries on Form 1041-T, extension payments, withholding and other credits

Schedule G, line 9 is the total tax and carries to page 1, line 24. Schedule G, line 19 is total payments and carries to page 1, line 26. Page 1 then compares the two, adds any estimated tax penalty on line 27 and the section 965 and 1062 amounts on lines 25a and 25b, and shows the tax due on line 28 or the overpayment on line 29.

Schedule G is computed after Schedule B, because taxable income on line 23 depends on the income distribution deduction on line 18. Any change to distributions or to DNI changes the Schedule G tax.

Where does each Form 1041 Schedule G number come from?

Each Schedule G line on Form 1041 pulls from a specific supporting form or record, according to the 2025 Instructions for Form 1041. Most credit lines need the source form attached, and the tax lines need the worksheet or form that computed them.

The line 2a foreign tax credit covers only the part of foreign taxes not allocable to beneficiaries, so the beneficiaries' share goes out on their K-1s and is claimed on their own Form 1116. Withheld income tax on line 14 can't be passed to beneficiaries, except backup withholding.

General business credits on line 2b work the same way. The instructions say not to include any credit amounts allocated to a beneficiary, and credits shared between the trust and its beneficiaries are generally apportioned on the basis of the income allocable to each. Credits other than those on lines 2a to 2d go into the line 2e total with the form number written beside the entry.

How is the tax on Schedule G, line 1a figured for 2025?

The tax on Form 1041 Schedule G, line 1a uses the 2025 Tax Rate Schedule in the Instructions for Form 1041 for tax years beginning in 2025. The brackets for estates and trusts are compressed, so the top rate starts at $15,650 of taxable income.

The rate schedule alone applies only when there are no qualified dividends and no net capital gain. If the trust files Schedule D (Form 1041) with a net capital gain or qualified dividends, the tax comes from Part V of Schedule D (Form 1041) or the Schedule D Tax Worksheet. With qualified dividends on line 2b(2) and no Schedule D, the Qualified Dividends Tax Worksheet applies, which for 2025 taxes qualified dividends at 0% up to $3,250 of taxable income and at 15% up to $15,900, with 20% above that.

Schedule I (Form 1041) has to be attached when the trust completes Schedule B, claims a credit on line 2b, 2c or 2d, or has a share of alternative minimum taxable income above $30,700.

How does the net investment income tax work for trusts on Form 8960?

The net investment income tax (NIIT) for an estate or trust is 3.8% of the smaller of undistributed net investment income or adjusted gross income above the threshold, figured on Form 8960 and entered on Schedule G, line 5. The Instructions for Form 8960 set the threshold at the dollar amount where the highest trust tax bracket begins, which is $15,650 for 2025.

1. Net investment income from Part I and Part II of Form 8960 (line 18a)
2. Less NII included in distributions deductible under section 651 or 661 and NII allocated to charity under section 642(c) (line 18b)
3. Undistributed NII (line 18c)
4. AGI under section 67(e) less $15,650 (lines 19a to 19c)
5. 3.8% of the smaller of line 18c or line 19c (lines 20 and 21)

For this test, AGI is total income less administration costs that wouldn't exist if the property weren't held in trust, the income distribution deduction, the exemption and any NOL deduction, per the AGI definition in the Instructions for Form 1041. Distributions reduce both undistributed NII and AGI, which is why accumulating trusts usually face NIIT and fully distributing trusts usually don't. Grantor trusts, charitable remainder trusts under section 664 and trusts exempt under section 501 aren't subject to NIIT. The NII deduction for distributions should equal the NII reported to beneficiaries on their K-1s.

What does a Form 1041 Schedule G calculation look like?

For example, a complex trust accumulates all of its 2025 income. It has $30,000 of taxable interest, pays a $2,000 trustee fee that counts as an administration cost, distributes nothing and claims the $100 exemption. It made $6,000 of estimated tax payments and has no credits or other taxes.

AGI here is $27,900 because the trustee fee and the exemption both come off total income for the section 67(e) definition. Line 19c is smaller than undistributed NII, so it sets the NIIT base. If the trust had distributed $20,000 of the interest, both the income distribution deduction and line 18b would rise by $20,000, line 19c would fall to zero and the NIIT would disappear. That swing is worth showing the trustee before year end, since a 65-day election can still change the result.

What do reviewers check on Form 1041 Schedule G?

A reviewer checking Form 1041 Schedule G confirms that each tax line uses the right method and that each payment ties to a document. The prior-year return and the trust's Form 1041-ES records are the first documents to pull for Part II, and the Schedule B result has to be final before Part I is reviewed. These six checks follow the 2025 Instructions for Form 1041 and Form 8960.

The reviewer also matches line 11 to box 13, code A on each Schedule K-1 (Form 1041), since the allocated payment becomes the beneficiary's estimated tax. On the payment side, any estimated tax the decedent paid before death belongs on the decedent's final Form 1040, not on the estate's line 10, and a trust that received a section 643(g) credit from another trust notes it beside line 10.