Paid out isn’t gross
A processor’s statement lists gross sales, refunds, fees and the net amount paid out, and the bank shows the deposits. Software can copy the net figure or the deposits into boxes labelled gross.
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Add the filer’s reporting profile, the payee’s W-9, the monthly transaction schedule and any correction papers. Fyllyo fills Form 1099-K on your Mac. Anything the documents disagree on is left for you, with the reason.

Form 1099-K is built from a payment company’s own records: ledgers, payout reports, W-9s and correction memos, and most of them give several amounts for the same month. The trouble starts where software has to pick the right one, keep two accounts apart, or check that the parts add up. These are the common places AI tools and autofill get it wrong. What the form requires is for the IRS to say. Follow its instructions. IRS instructions for Form 1099-K.
A processor’s statement lists gross sales, refunds, fees and the net amount paid out, and the bank shows the deposits. Software can copy the net figure or the deposits into boxes labelled gross.
Box 1a is the year’s total and boxes 5a to 5l split it by month. When a memo’s annual figure and the monthly schedule disagree, software that copies one, or adds up the other, fills a number nobody checked.
One payee can have a card account and a payment-network account with the same company, and their ledgers sit side by side in the file. Software can add both into one form or tick both transaction boxes.
A correction file shows the originally reported figures beside the replacements, and it’s dated the year after the one it reports. Software can copy the superseded amounts, put the paperwork’s year in the calendar-year box, or miss the CORRECTED box.
The form has a box for a PSE’s name and phone. Processor files also name sponsor banks and payout banks, so software can fill that box with the filer’s own name or a bank’s.
The W-9 on file can be years old. When the payee has moved, and the file also holds a shop address and the bank’s, software can copy the W-9 address onto the payee’s statement.
With a test client and eight documents (a reporting profile, a W-9, an address change, a corrected monthly schedule, a correction authorization, a withholding register, a payment-network summary and a bank deposit summary), Fyllyo filled 72 fields across the form’s three copies in 27 seconds. It left box 1a for the preparer, with both amounts.

Fyllyo can fill all 112 fields on Form 1099-K from the client’s documents. Lines the documents don’t support stay blank and are listed for you to check.
You confirm on every form
Fyllyo reads the documents you already have. These can be PDFs, scans, photos, Word files or typed notes, and you can add several at once. Fyllyo works out which document answers which line.
Client documents and the filled form never leave your computer. Fyllyo uploads nothing. Once it is set up, filling works offline.
Fyllyo doesn’t decide what to file, give legal or tax advice, or submit Form 1099-K for you. Use the IRS’s instructions for Form 1099-K and your professional judgement. Fyllyo does the reading and the typing.
Fyllyo reads scans and photos as well as PDFs, Word files and typed notes. Clear, readable copies give the best results, and every answer on Form 1099-K still shows the line it came from.
Try form filling free for 5 days. Then buy Fyllyo Paid once for $99. It is a lifetime licence with free updates and no subscription. Filling forms on your Mac uses no AI credits. Pricing and licence details.