How to Fill Out Form 1065 (2026): Partnership Return Guide

Form 1065 is the annual return for partnerships and multi-member LLCs. It reports the business's income and deductions and issues a Schedule K-1 to each partner showing their share. For calendar-year partnerships, the 2026 return and every partner's K-1 are due March 15, 2027, a month before partners need those K-1s for their own returns.

What's new for 2026:

The late filing penalty rises to $260 per partner, per month, for returns due in 2027, up from $255.
Guaranteed payments to partners are reported on line 10, and ordinary business income on line 23.
The qualified business income deduction is now permanent, which makes the Section 199A information on each K-1 (box 20, code Z) more important for partners.
100% bonus depreciation is permanent for qualifying assets acquired after January 19, 2025.

The partnership itself usually pays no federal income tax, but filing late is still expensive. Most of the work is in getting partner payments, distributions, and capital accounts right in the books.

Form 1065 at a glance

Key fact	2026 tax year
Who files	Partnerships and LLCs with two or more members (unless taxed as a corporation)
Due date	March 15, 2027, with K-1s to partners by the same date
Extension	Form 7004 moves filing to September 15, 2027
Entity-level tax	Generally none. Income passes through to partners on K-1s
Late filing penalty	$260 per partner, per month or part of a month, up to 12 months, for returns due in 2027
Schedules L, M-1, and M-2	Can be skipped only if total receipts are under $250,000, total assets under $1 million, and K-1s are issued on time

Download Form 1065

Do you need to file Form 1065?

Your situation	File Form 1065?
Two or more owners running a business together, with no corporate election	Yes
Multi-member LLC taxed under the default rules	Yes
LLP or PLLC law or accounting firm with partners	Yes
Single-member LLC	No. Report on Schedule C
LLC that elected S-corp or C-corp status	No. File Form 1120-S or Form 1120
Partnership with no income, deductions, or credits for the year	Not required

Line-by-line instructions (key lines)

Line or item	What to enter	Where the number comes from in your books
1a: Gross receipts	All fee income for the year	Revenue accounts, reconciled to 1099s received
9: Salaries and wages	Pay to W-2 employees only	Payroll register. Should tie to the four 941s
10: Guaranteed payments to partners	Fixed payments to partners for services or capital, regardless of profit	A dedicated guaranteed payments account, separate from draws
Other deduction lines	Rent, taxes, interest, depreciation (Form 4562), benefits, and other expenses	Expense accounts mapped to return lines
23: Ordinary business income	Total income minus total deductions	Calculated. Should match book net income after tax adjustments
Schedule B	Yes/no questions on ownership, partner types, and filing thresholds	Partner records and the partnership agreement
Schedule K	Totals of every item passed through to partners	Calculated from page 1 and separately stated items
K-1, item J	Each partner's share of profit, loss, and capital	The partnership agreement's allocation terms
K-1, item L	Each partner's capital account on the tax basis	Partner capital accounts: contributions, income share, and distributions
K-1, box 4	That partner's guaranteed payments	Guaranteed payments account, by partner
K-1, box 14	Self-employment earnings	Generally the partner's share of ordinary income plus guaranteed payments, for partners active in the business
K-1, box 19	Distributions to that partner	Partner draw and distribution accounts

Worked example: a three-partner law firm LLP

The firm billed $1,800,000 in 2026. Each partner receives a $150,000 guaranteed payment, and remaining profit is split 40/30/30.

Item	Amount	Where it goes
Fee revenue	$1,800,000	Line 1a
Staff wages	$520,000	Line 9
Guaranteed payments (3 × $150,000)	$450,000	Line 10
Rent	$96,000	Deductions
Depreciation	$30,000	Deductions (from Form 4562)
Other expenses	$184,000	Deductions
Ordinary business income	$520,000	Line 23

Partner	K-1 box 1 (share of income)	K-1 box 4 (guaranteed payments)	Total taxable to partner
Partner A (40%)	$208,000	$150,000	$358,000
Partner B (30%)	$156,000	$150,000	$306,000
Partner C (30%)	$156,000	$150,000	$306,000

The monthly draws the partners took during the year do not appear on page 1 at all. They show up in box 19 and reduce each partner's capital account. Partners are taxed on their share of income whether or not they withdrew it, which is why draws and guaranteed payments need separate accounts in your books.

Your Form 1065 prep checklist

When	Task
December	Confirm partner contributions and any ownership changes during the year. Check the agreement's allocation terms
First week of January	Total guaranteed payments and distributions for each partner
February	Close the books, finalize depreciation, and roll forward each partner's tax-basis capital account
Early March	Review draft K-1s with partners. Ask whether any partner needs state K-1s or a composite return
By March 15	File the return and send K-1s, or file Form 7004 to extend

Common mistakes to avoid

Booking partner draws as expenses. Draws are distributions, not deductions. Only guaranteed payments reduce partnership income.
Filing late because no tax is due. The per-partner monthly penalty applies even when the partnership owes nothing. A five-partner firm three months late pays $3,900.
Capital accounts that do not tie. Item L must be reported on the tax basis. If partner capital accounts are not maintained that way in the books, the K-1s are hard to defend.
Ignoring the partnership agreement. Allocations follow the agreement, not just ownership percentages. Special allocations or waterfalls must be reflected in the K-1s.
Not naming a partnership representative. Under the current partnership audit rules, the IRS deals with one representative. Eligible small partnerships can also elect out of those rules each year on Schedule B-2.

If you file late or get it wrong

The late filing penalty is $260 per partner for each month or part of a month the return is late, up to 12 months, even when no tax is owed. To correct a filed return, partnerships under the current audit rules generally file an administrative adjustment request rather than a simple amended return. Your CPA will advise which applies.

Law firm callout

Law firm partnerships face three recurring Form 1065 issues. Client funds in IOLTA trust accounts are not partnership income until earned and transferred to operating. Contingency fees are income when received on the cash method, which can create large year-to-year swings. And partners who practice or live in other states may need state K-1s or a composite return. Keep trust and operating activity in separate accounts, as covered in our IOLTA trust account compliance guide and our guide to accounting for legal settlements. Confirm the treatment of specific items with your CPA before relying on these notes.

Frequently asked questions

Does a multi-member LLC file Form 1065?

Yes, by default. An LLC with two or more members is taxed as a partnership unless it elects to be taxed as a corporation. Each member then gets a K-1 instead of filing a Schedule C.

What is the difference between guaranteed payments and draws?

A guaranteed payment is a fixed amount paid to a partner for services or capital. It is deductible to the partnership and taxable to the partner. A draw is a withdrawal of the partner's share of profit. It is not deductible and does not change what the partner is taxed on.

Can partners file their personal returns before receiving a K-1?

Not accurately. Partners need the K-1 to report their share of income. If the partnership extends to September 15, partners usually extend their personal returns too, but still pay estimated tax by April 15.

Related reading:

AI-powered. Experts in the Loop. Numetix keeps guaranteed payments, draws, and partner capital accounts separate and reconciled all year. Your CPA gets K-1-ready numbers in February instead of rebuilding capital accounts in March. Explore Numetix bookkeeping.

Always consult your CPA for advice specific to your partnership and its agreement.

This article is for informational purposes only and does not constitute formal legal or tax advice. Always consult a qualified tax professional regarding your specific situation.