For investors who receive more than one Schedule K-1
Every K-1 box in one spreadsheet.
Upload your Schedule K-1s. Get one CSV row per K-1, with the source line printed beside each value so you can check it against the paper in 30 seconds. Then work down a box-by-box checklist as you enter the numbers in your tax software.
- Not tax advice
- SSN and EIN shown as last four only
- 1 file per day, up to 10 pages, no account
Convert a Schedule K-1
Your values appear here
Read a K-1, or load a sample, and this side fills in with:
1Form summary
Partnership, partner, the last four digits of each ID, and the profit, loss and capital shares.
2Every box, with its source
Each value beside the line of the document it was read from, so you can check it against the paper.
3A review list
Anything unclear, such as a negative amount whose parenthesis was lost. Nothing is guessed.
4CSV and checklist
One row per K-1, and the boxes in the order you would type them into your tax software.
Nothing here is real data until you read a file or load a sample.
In plain words
What is a Schedule K-1, and what does K1 FastTax do with it?
A Schedule K-1 is the form a partnership, an S corporation or an estate or trust sends you each year to report your share of its income, deductions and credits. It is not filed on its own: you copy its numbers, box by box, onto your own return.
If you hold LP units, a real estate syndication, a family partnership or a fund, you probably get one K-1 per investment, often late in the season and sometimes with pages of statements. Part III of a Form 1065 K-1 has boxes 1 to 23. The coded ones (11 and 13 to 20) carry letter codes with their amounts, and K1 FastTax reads boxes 1 to 20.
K1 FastTax is a reader for those boxes. You upload the K-1 as a PDF or an image. It returns every box and code in one table, one CSV row per K-1, with the line of the document each value was read from. Anything it cannot read with confidence is listed for you to check on the paper. Nothing is guessed.
Investors with several K-1s
LP interests, real estate syndications, funds and family partnerships each send their own K-1, usually late and with statements attached. One table for all of them beats a stack of PDFs.
People doing their own return
If you use TurboTax, TaxAct, H&R Block or FreeTaxUSA, you type each K-1 in by hand. The checklist gives you the box, the code and the number in typing order, so you do not hunt the paper for each line.
Preparers
Read a client's K-1 into a row you can sort, total and compare year over year. The source line on every value is there so a second person can verify it quickly.
Step by step
From PDF to a checked spreadsheet in five steps
Upload the K-1 pages
A PDF or a clear image. If one PDF holds several K-1s, each becomes its own row. Statements and Schedule K-3 pages can stay in the file, but they are not read.
Read the review list first
Anything unclear is listed with its source line and the possible readings. A negative amount whose closing parenthesis was lost, for example, shows both 4,218 and -4,218.
Check the values against the paper
Each value has the line it was read from beside it, so you can compare a box with the paper in about 30 seconds without hunting for it.
Download the CSV and the checklist
The CSV is one wide row per K-1 for totals and records. The checklist is one line per box and code, in the order you would type them.
Type the numbers into your tax software
TurboTax, TaxAct, H&R Block, FreeTaxUSA and others have K-1 screens you fill in yourself. Work down the checklist and tick each line. Nothing is entered or filed for you.
What comes back
Two real results, produced by the same reader
These are made-up K-1s, run through the same code as your upload. The first reads cleanly. The second is a rough scan: the labels are damaged, two boxes point to statements, and the closing parenthesis on box 1 is gone, so its sign is held for you to check instead of guessed. You can load both in the box above.
Simple 1065 K-1
Maple Ridge Income Fund LP. Boxes 1, 2, 5 and 19 and 20 with code A. Everything reads cleanly.
| Box | Value | Source line |
|---|---|---|
| 1Ordinary business income (loss) | 12,480 | 1 Ordinary business income (loss) | 12,480 |
| 2Net rental real estate income (loss) | 3,150 | 2 Net rental real estate income (loss) | 3,150 |
| 5Interest income | 215 | 5 Interest income | 215 |
| 19Distributions | A 8,000 | 19 Distributions | A 8,000 |
| 20Other information | A 215 | 20 Other information | A 215 |
Messy scan, one unclear minus
Harbor Point Real Estate Partners LLC. OCR noise in the labels, box 13 code W, statements on boxes 11 and 20, and a box 1 whose closing parenthesis was lost.
| Box | Value | Source line |
|---|---|---|
| 1Ordinary business income (loss) | review (4,218 or -4,218) | 1 Ordlnary buslness lncome (Ioss) ⏎ (4,218 |
| 2Net rental real estate income (loss) | 2,906 | 2 Net rental real estate income (loss) 2,906 |
| 4aGuaranteed payments for services | 1,800 | 4a Guaranteed payments for services 1,800 |
| 4cTotal guaranteed payments | 1,800 | 4c Total guaranteed payments 1,800 |
| 5Interest income | 74 | 5 Interest income 74 |
| 6aOrdinary dividends | 1,310 | 6a Ordinary dividends 1,310 |
| 6bQualified dividends | 902 | 6b Qualified dividends 902 |
| 8Net short-term capital gain (loss) | -1,022 | 8 Net short-term capital gain (loss) (1,022) |
| 9aNet long-term capital gain (loss) | 6,730 | 9a Net long-term capital gain (loss) 6,730 |
| 11Other income (loss) | ZZ STMT | 11 Other income (loss) ZZ STMT |
| 13Other deductions | W 1,250 | 13 Other deductions W 1,250 |
| 14Self-employment earnings (loss) | A -2,418 | 14 Self-employment earnings (loss) A (2,418) |
| 19Distributions | A 5,500 | 19 Distributions A 5,500 |
| 20Other information | A 74; Z STMT | 20 Other information A 74 Z STMT |
Held for review (3)
- Box 1: The sign of 4,218 is unclear (unbalanced parenthesis). Check the paper K-1: enter 4,218 or -4,218.
- Box 11: Code ZZ points to an attached statement instead of an amount. Read the statement.
- Box 20: Code Z points to an attached statement instead of an amount. Read the statement.
Compared honestly
Typing it yourself, generic OCR, or a reader built for K-1s
Generic OCR returns text or cells in the order the page was laid out. A K-1 needs the box number, the label, the sign and the code kept together, and a way to see where each value came from.
| What you need | Typing it yourself | Generic PDF-to-text OCR | K1 FastTax |
|---|---|---|---|
| Knows which box a number belongs to | You do, by eye, one K-1 at a time. | No. You get text or a grid of cells in layout order. | Yes. Matches box numbers and IRS labels, and tolerates scan noise. |
| Shows where each value came from | The paper in front of you. | Only a position in the text. | The source line printed beside every value. |
| Negative amounts | Easy to drop a minus when typing. | Parentheses stay as characters, and a lost one is invisible. | Parentheses and minus signs become negative numbers. An unclear sign goes to a review list. |
| Coded boxes (11 and 13 to 20) | You read code and amount pairs from a small cell. | Letters and amounts run together in one string. | Code and amount pairs, with one codes column per coded box. |
| Several K-1s | Start over for each one. | Separate output per page. | One row per K-1, even from a single PDF. |
| SSN and EIN | You type the full numbers. | Full numbers stay in the output. | Last four digits only in the result, CSV and checklist. |
| Entry checklist for tax software | None. You work from the paper. | None. | Yes, in typing order, with the box and code named on each line. |
Where it stops
What K1 FastTax does not do
- It does not give tax advice, and it does not know your basis, your at-risk amount or your passive activity history.
- It does not import into any tax software and does not file anything.
- It does not read Schedule K-3 or the statements attached to a K-1. It flags them so you do not miss them.
- It reads Form 1065 K-1s box by box. Form 1120-S and Form 1041 K-1s are recognised and labelled, but their values go into a single column of the CSV.
- A poor scan gives more review items. Always compare the result with the paper before you rely on it.
Plain answers
Questions about reading K-1s
What does K1 FastTax do with my Schedule K-1?
It reads the boxes on your K-1 and puts them in a spreadsheet: one row per K-1, with every amount and every code. Next to each value it shows the line of the document the number came from, so you can check it against the paper in about 30 seconds. It also builds a checklist of the boxes in the order you would type them into your tax software.
Does it import into TurboTax, TaxAct, H&R Block or FreeTaxUSA?
No. K1 FastTax does not connect to any tax software and does not file anything. You type the numbers into your software yourself. The checklist tells you which box and code each number belongs to, so the typing is quick and the checking is easy.
Is this tax advice?
No. K1 FastTax reads and formats what is printed on your K-1. It does not decide what is taxable, whether a loss is allowed, or where an item belongs on your return. For those questions use the Partner's Instructions for Schedule K-1 (Form 1065), your tax software's help, or a tax professional.
What happens when a number on my scan is unclear?
It is not guessed. Anything the reader cannot read with confidence is held out of the CSV and listed under Needs review, with the source line and the possible readings. The usual case is a negative amount whose closing parenthesis was lost: the reader shows both 4,218 and -4,218 and asks you to check the paper.
How are negative numbers and coded boxes stored?
A number in parentheses or with a leading minus is stored as a negative number. Coded boxes (11 and 13 to 20) are stored as code and amount pairs in a column such as box_13_codes, for example W:1250. A line that says STMT is stored as STMT, because the amount is on an attached statement.
Which K-1s can it read?
Schedule K-1 (Form 1065), the partnership and LLC K-1, is read box by box. Schedule K-1 (Form 1120-S) for S corporations and Schedule K-1 (Form 1041) for estates and trusts are recognised and labelled, and their boxes are placed in one other_form_boxes column instead of the Form 1065 columns.
Can one file hold several K-1s?
Yes. If one PDF has several K-1s, each becomes its own row. The free allowance is 1 file per day, up to 10 pages, no account. Longer files need the page code that comes with the Season Pass or Pro, which converts files up to 150 pages.
My K-1 has my Social Security number on it. What happens to it?
The file is processed in memory and deleted after conversion. SSNs and EINs are reduced to their last four digits before the result reaches your browser, so the table, the CSV and the checklist only ever show the last four. Pages that need a second look may be sent to Google's Gemini API, which can keep data up to 55 days under Google's terms; you can cover the ID boxes before uploading.
Does it read Schedule K-3 or the statements attached to my K-1?
No. A checked box 16 adds a reminder to the review list that a Schedule K-3 is attached, and any code that points to a statement is recorded as STMT. The pages themselves are yours to read, or your preparer's.
Why does it show only code letters like W instead of what the code means?
Because the meaning of a code letter can change between tax years. Box 13 code W, for example, is Soil and water conservation in the 2025 list and was a different deduction in earlier years. K1 FastTax records the letter and the amount. The box guide lists the 2025 codes with a reminder to check the year on your K-1.
What does it cost?
Free: 1 file per day, up to 10 pages, no account. Season Pass: $19 every 4 months for 200 K-1 files, each up to 150 pages, with the CSV and checklist. Pro: $9 per month for 100 K-1 files. Both renew until you cancel.
Try it on your own K-1
Free: 1 file per day, up to 10 pages, no account. Nothing is filed and nothing is entered into tax software for you.