If you own rental property with a partner through a multi-member LLC, March 15 is your deadline — not April 15. Form 1065 is due two months before personal returns, because your partners can't file their own taxes until they get their K-1s from you. Miss it, and you've delayed everyone.
Here's what Form 1065 actually requires, why it's more involved than a solo landlord's return, and what your bookkeeping needs to look like to support it.
What Form 1065 actually is
Form 1065 is the U.S. Return of Partnership Income. It's an information return — the partnership itself pays no federal income tax. Instead, it reports the partnership's income, deductions, and credits, then distributes those items to each partner through Schedule K-1.
Partners report their K-1 share on their personal Schedule E (Part II). The tax gets paid at the individual level.
Who must file
- Any multi-member LLC that hasn't elected S-Corp or C-Corp treatment
- Spouses co-owning a rental LLC (in most states — community property states have exceptions)
- Family LLCs with multiple members
- Any two-or-more member LLC, regardless of size or number of properties
Deadline
March 15 for the partnership return and K-1s. A 6-month extension (to September 15) is available by filing Form 7004. Extensions are routine — your accountant likely files them automatically. But your books still need to be ready on time.
Where rental income actually lands on the return
This trips people up the first time: rental income from real estate doesn't go directly on Form 1065. It goes on Form 8825 — Rental Real Estate Income and Expenses of a Partnership — which then feeds into Schedule K. Think of 8825 as the rental-specific appendix to the 1065.
Schedule K and Schedule K-1
Schedule K(part of the 1065) summarizes the partnership's total income, deductions, and credits for the year.
Schedule K-1(one per partner) breaks out each partner's allocated share. Box 2 on the K-1 is specifically for net rental real estate income. This is what partners use to fill out their personal Schedule E Part II.
Capital accounts: the thing most partnerships skip
This is the part that causes the most problems. Partnerships are required to maintain a capital account for each partner — a running ledger of their equity stake in the business.
How capital accounts work
- ➕ Initial cash or property contribution
- ➕ Income allocations
- ➕ Additional contributions
- ➖ Distributions
- ➖ Loss allocations
Capital accounts appear on Schedule L (Balance Sheet per Books) and Schedule M-2 (Analysis of Partners' Capital Accounts) of the 1065. If they don't reconcile, the return will generate IRS notices. If you've been operating for years without tracking them, reconstruction is painful and expensive.
Many rental partnerships operate for years without maintaining proper capital accounts — until they try to sell, refinance, or add a partner. That's when it becomes an emergency. Start clean and keep it current.
Profit and loss allocations
Income and deductions are allocated between partners according to the LLC operating agreement — typically by ownership percentage. A 60/40 split means 60% of rental income, depreciation, mortgage interest deductions, and any losses flow to the majority partner's K-1.
The allocations must have "substantial economic effect" — they need to reflect real economic arrangements, not just tax optimization. If your allocations look arbitrary, the IRS can challenge them.
What your bookkeeping needs to support a clean 1065
- Double-entry accounting — every transaction as a debit and credit, so the balance sheet actually reconciles
- Per-property income and expense tracking — Form 8825 reports each property separately
- Depreciation schedule — each asset, its basis, method, and annual amount
- Capital account ledger — running balance for each partner throughout the year
- Mortgage amortization — splitting payments into principal (balance sheet) and interest (expense)
Why most landlord software fails here
Stessa, Baselane, and generic spreadsheet setups track income and expenses — but they don't maintain capital accounts, support per-partner allocations, or generate K-1s. Your accountant ends up doing the partnership accounting by hand from your exports. That reconstruction time shows up in your invoice.
The easier path
The cleanest approach is accounting software built around the 1065 workflow from the start. Kulta maintains capital accounts, handles mortgage amortization, tracks depreciation per property, and produces partnership-ready reports — so when March 15 comes, your accountant is working from complete books, not fragments.
Start free at kulta.app.