Corrections
Amended K-1: the second copy replaces the first, it does not join it
A corrected K-1 arriving in April is the most expensive document in the file, because everything about the way it arrives suggests an addition. It is a replacement. The work is proving exactly what changed, and that is a diff, not a re-read.
The failure is mechanical before it is technical: the client sends the new K-1, the preparer keys it into the next empty line, and the income doubles. Nobody makes that mistake twice, but everybody makes it once, and the version that survives review is the one where the two figures landed in different places in the software and looked like two partnerships.
Five shapes
Not every second copy is a correction
Before comparing figures, work out which of these you are holding. Two of the five require nothing more than a file note, and treating them as corrections costs an afternoon.
| What arrived | What it usually means | What to do |
|---|---|---|
| Same figures, new issue date | The issuer re-sent the packet, or a portal reissued it. Nothing changed. | File it behind the original and write the date on the folder. Do not re-key it, and do not treat the reissue as a correction. |
| One box changed | A late invoice, a reclassified expense, a code corrected after review. | Diff the two copies box by box and let the return carry the new figure. The change to the return should be traceable to that single box. |
| Many boxes changed | A revised trial balance reached the partnership after the K-1s went out. | Usually this is a different return, not a correction. Read the issuer's cover note before deciding how much of the return is in play. |
| Prior year on the header | A correction to a year already closed, or a packet assembled from the wrong folder. | The year decides where it goes. A prior-year correction means a prior-year return, which is a different piece of work entirely. |
| Different identifying number | A restatement under a new entity, or a different member of the same fund family. | Stop. This is a different issuer until proven otherwise, and entering it as a correction will silently fold two investments into one line. |
The diff, done properly
Put the old row and the new row beside each other with one line per box and per code, and mark three states: same, changed, present in one only. The third state is the one that gets missed, and it is the one that matters for a coded box where a letter was dropped rather than an amount altered.
- Same amount, different sign. A parenthesised loss turned into a figure on the reissue is a change, and a diff that compares absolute values will call it identical.
- Code present, amount absent. A STMT that became a number, or a number that became a STMT, is a change even though neither side is blank.
- A box that disappeared. Old had a figure, new is empty. That is a change to zero, and it is the hardest one to notice when reading the new document on its own.
The output of the diff should be short enough to read aloud to the partner who signs the return: these boxes changed, by these amounts, and here is the page on each copy. If the list is longer than that, the case is not a correction and should be treated as a new return.
What the replacement has to reconcile to
The diff gives you a set of deltas. The return gives you a set of changes. They must be the same set. If the K-1 changed box 1 by twelve thousand and the return moved by twelve thousand plus something else, the something else came from somewhere you have not looked at yet — a carryforward that recomputed, a limitation that cleared, a state figure that follows federal.
That second-order movement is normal and is the reason a K-1 correction takes longer than one entry. Write it down as its own line: the box that changed, the direct effect, and the consequential lines it touched. A reviewer who sees both can accept the return in a minute. A reviewer who sees only the new number will redo the year.
When not to follow the correction
Occasionally the corrected K-1 is itself wrong, or arrives from a partnership in an audit adjustment process that binds the partner to a different figure entirely. In those cases the partner does not quietly adopt the new number, and the partner does not quietly keep the old one either. The route is Form 8082, which discloses that the return treats the item differently from the way the entity reported it — and it exists precisely so that a preparer never has to choose between an inaccurate return and an undisclosed inconsistency.
Use it deliberately, not as a fallback, and only after the issuer has been asked in writing. The reconciliation against the partnership return is where a disagreement like that usually surfaces first, because it is the one place both sides of the number are visible at once.
The file note that ends the argument
Three lines on top of the corrected copy: received on this date, supersedes the copy received on that date, and these are the boxes that differ. That note is worth more than any amount of care taken in keying, because it is the only thing that will still be readable in three years when the client asks why the return they signed does not match the K-1 in their drawer.
Plain answers
Questions about corrected K-1s
What is the difference between an amended K-1 and a superseding K-1?
The words describe the partnership's filing, not your copy. A superseding return replaces the original and has to be filed by the extended due date; an amended return comes after that. Either way the document you receive restates the partner's items, and either way you replace what you had rather than adding to it.
The K-1 has an amended box checked, but the figures look identical. Do I have to do anything?
Confirm the figures rather than assuming. Compare the two copies box by box. If they are identical, nothing in the return changes and the file note says so. If one differs, that difference is the amendment, and a checked box with no visible change usually means the change is on a statement rather than on the face of the form.
What if the partnership refuses to send a corrected K-1?
The K-1 instructions say to tell the partnership and ask for a corrected schedule, and not to change your own copy. If your return has to take a different position from the K-1 you were given, that inconsistency is disclosed on Form 8082, attached to the return. It is not something to resolve by editing the K-1 in your file.
Does a corrected K-1 mean an amended return?
Only if the correction changes a figure on a return that was already filed. A correction that arrives before the return is filed is just the figure. A correction that arrives afterwards means finding the return, making the change and deciding whether the change is material enough to amend. That decision is a judgement, and it is documented rather than assumed.
Does K1 FastTax handle a revised K-1?
It reads each file on its own and exports the amended and final checkboxes from the form header as their own fields, so a file can be filtered by which version it is. It does not compare two K-1s for you. The comparison is the check in this guide, and it is deliberately manual.
Every version, tagged as a version
K1 FastTax reads the amended and final checkboxes from a K-1 header into their own CSV fields, so a folder of K-1s can be sorted into originals, corrections and final returns before anything is keyed.