Schedule K-1 (Form 1065), box 16
Box 16: Schedule K-3 is attached if checked
A checkbox that tells you foreign-transaction detail is on an attached Schedule K-3. It is a flag, not a dollar amount.
What box 16 reports
On recent K-1s, box 16 is a checkbox meaning a Schedule K-3 (Partner's Share of Income, Deductions, Credits, etc. - International) is attached.
On K-1s for years before 2021 box 16 was titled Foreign transactions and carried codes and amounts. K1 FastTax recognises the older wording.
Where it goes on your return
Flag only
The common case
There is no entry for box 16 itself on Form 1040. If it is checked, the attached Schedule K-3 holds the foreign items, which can matter for the foreign tax credit.
When it depends on you
Which K-3 parts you need depends on the K-3 instructions and your own situation.
A real example line
Below, a line written the way the document text arrives, run through the same reader as your upload. The reader matches the box number and the IRS label, then reads the amount, so it still finds the line when the scan is noisy.
| Line as the engine reads it | Box | Recorded value | Status |
|---|---|---|---|
16 Schedule K-3 is attached if checked [X] | 16 | Checked | Read |
Check before you enter it
- K1 FastTax does not read Schedule K-3. A checked box 16 adds a K-3 line to the review list so you do not miss it.
- Foreign taxes paid or accrued are in box 21, which is outside the exported range.
In the K1 FastTax output
CSV column: box_16 (X when checked) and k3_attached. In the checklist a line looks like Schedule K-1 (1065) screen, box 16. All CSV columns.
Official source
The IRS text for every box is in the Partner’s Instructions for Schedule K-1 (Form 1065). Use the edition for the tax year printed on your K-1, because box wording and code lists change.
Plain answers
Questions about box 16
What does box 16 mean on a Form 1065 K-1?
On recent K-1s box 16 is a checkbox. When it is checked, a Schedule K-3 (Partner's Share of Income, Deductions, Credits, etc. - International) is attached. It is a flag, not a dollar amount.
Do I enter anything from box 16 on Form 1040?
There is no entry for box 16 itself. If it is checked, the attached Schedule K-3 holds the foreign items, which can matter for the foreign tax credit. See the Partner's Instructions for Schedule K-1 (Form 1065) and the instructions for Schedule K-3.
Does K1 FastTax read the Schedule K-3?
No. A checked box 16 adds a K-3 line to the review list so that you do not miss the attachment, and the CSV records it in box_16 (X when checked) and in k3_attached.
Where are foreign taxes paid on my K-1?
Foreign taxes paid or accrued are in box 21, which is outside the box 1 to 20 columns. K1 FastTax adds a review item for it and lists the amount in the other_form_boxes column, for example 21=125, so that it is not overlooked.
My older K-1 has foreign transactions in box 16. Is that the same box?
On K-1s for years before 2021 box 16 was titled Foreign transactions and carried codes and amounts. K1 FastTax recognises the older wording and writes those lines to box_16_codes, for example A:5000;B:300. Code letters and titles change between tax years, so check the instructions for the year on your K-1.
How do I know which parts of the Schedule K-3 I need?
Which K-3 parts you need depends on the K-3 instructions and on your own situation, for example whether you claim the foreign tax credit. Ask your preparer, and see the Partner's Instructions for Schedule K-3 (Form 1065).
Is box 16 the same on a Form 1120-S K-1?
On a Form 1120-S K-1 the Schedule K-3 checkbox is box 14. Box numbers differ between forms, so read the label next to the box.
Related boxes
Read box 16 from your own K-1
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