- Why you got a K-3 when the partnership has no foreign activity
- The parts of Schedule K-3 you're most likely to use
- The domestic filing exception
- What if you ask after the 1-month date?
- An example where no K-3 is needed
- When the partnership's figures don't fit your facts
- The verdict
- Frequently asked questions
Schedule K-3 (Form 1065) is the schedule a partnership gives each partner to report items of international tax relevance, such as foreign-source income, foreign taxes and assets, alongside the Schedule K-1. Partners use it mainly to work out the foreign tax credit on Form 1116 or 1118. A domestic partnership with little or no foreign activity can skip it under the domestic filing exception, unless a partner asks.
Everything below comes from the 2025 Partner's Instructions for Schedule K-3 and the 2025 Partnership Instructions for Schedules K-2 and K-3, as of October 2026. Schedule K-2 is the partnership-level summary; Schedule K-3 is each partner's share.
Why you got a K-3 when the partnership has no foreign activity
This is the question most partners ask, and the instructions answer it. A partnership with no foreign source income, no foreign assets and no foreign taxes may still report on Schedule K-3, because some of your foreign tax credit calculation depends on the partnership's figures.
If you claim a credit for foreign taxes paid separately from the partnership, you may need the partnership's income by source, its expenses and the tax book value of its assets to complete Form 1116. The IRS example: Kirby, a partner in a purely domestic partnership, paid $2,000 of foreign income taxes on his own passive income. Including his share of the partnership's assets in his interest expense calculation lets him use $1,875 of credit instead of $1,750, an extra $125.
The parts of Schedule K-3 you're most likely to use
| Part | What it's for |
|---|---|
| Part I | International tax items not reported elsewhere on the schedule |
| Part II | Your share of income and loss by source and foreign tax credit category, for Form 1116 or 1118 |
| Part III | Allocating and apportioning R&E expenses, interest expense and the FDII deduction, and your share of creditable foreign taxes |
| Part IV | Information for the foreign-derived intangible income (FDII) deduction |
| Part IX | Deductible payments to foreign related parties, for domestic corporate partners checking BEAT |
| Part X | Foreign partners' character and source of income and deductions |
You only use the parts that apply to you. A domestic corporation partner, for example, wouldn't get Part X, because that part is for foreign partners. All amounts are in US dollars unless stated otherwise.
The domestic filing exception
A domestic partnership doesn't have to complete and file Schedules K-2 and K-3, or furnish a K-3 to partners, if it meets all four criteria for the 2025 tax year:
- No or limited foreign activity: any foreign activity is limited to passive category income with no more than $300 of foreign income taxes, shown on a payee statement such as a Form 1099.
- All direct partners are US citizens, resident aliens, or certain domestic estates, trusts, S corporations, single-member LLCs or partnerships made up of these.
- Partners receive a notice, at the latest with their Schedule K-1, saying they won't get Schedule K-3 unless they ask for it.
- No partner asks for Schedule K-3 information by the 1-month date, which is 1 month before the partnership files Form 1065.
For 2025 calendar-year partnerships that file an extension, the latest 1-month date is August 17, 2026. A partner who wants the K-3 every year has to ask specifically for future years or ask each year.
What if you ask after the 1-month date?
The exception still applies to the partnership overall, but it must give the requesting partner a completed Schedule K-3 no later than 1 month after receiving the request. The non-requesting partners still don't get one. So if you need the figures for Form 1116, ask early, ideally when you get your Schedule K-1 and its notice.
An example where no K-3 is needed
The IRS gives the simple case. A married couple, both US citizens, each own 50% of a domestic partnership that invests in a regulated investment company. The fund reports $100 of creditable foreign taxes on passive income on a Form 1099, and the partnership has no other foreign activity. It sends the couple a notice with the K-1 saying they won't get a K-3 unless they ask, they don't ask, so it meets the domestic filing exception and doesn't complete one. You also aren't required to get Parts II and III if you don't have to complete Form 1116 because you qualify for an exception to filing it under section 904(j).
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When the partnership's figures don't fit your facts
Some items depend on information the partnership may not have, so it may have filled in the K-3 on assumptions that turn out to be wrong. In that case you must treat the items according to your actual facts and, where appropriate, file Form 8082, Notice of Inconsistent Treatment or Administrative Adjustment Request, to explain the difference. If you're a partnership yourself, you use the K-3 you receive to prepare K-3s for your own partners.
The verdict
If you have no foreign tax credit to claim and the partnership has no foreign activity, a K-3 is mostly paper you file away. If you do claim a foreign tax credit, the K-3 can be worth real dollars, as Kirby's example shows. Read the notice that comes with your K-1, and if you'll file Form 1116, request the K-3 before the 1-month date.
Frequently asked questions
What is Schedule K-3 used for?
It reports items of international tax relevance from a partnership to each partner, mainly so partners can figure foreign tax credits on Form 1116 or 1118.
Why did I get a Schedule K-3 from a domestic partnership?
Partners who claim a foreign tax credit may need the partnership's income, expense and asset information to complete Form 1116, even when the partnership has no foreign activity.
What is the domestic filing exception for Schedule K-3?
A domestic partnership with no or limited foreign activity, only US citizen or resident-type partners, a notice to partners and no K-3 requests by the 1-month date doesn't need to file Schedules K-2 and K-3.
What is the 1-month date for Schedule K-3?
One month before the partnership files Form 1065. For 2025 calendar-year partnerships on extension, the latest 1-month date is August 17, 2026.
What if the partnership's K-3 doesn't match my situation?
Treat the items according to your actual facts and, if appropriate, file Form 8082 to explain the inconsistency.
