fyllyoPay per paycheck, not per year
A pay stub shows one paycheck and a year-to-date total. Copy either one as annual income and the figure is wrong.
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Fill Form I-864 with AIAffidavit of Support Under INA
Add the sponsor’s pay stubs, tax transcripts, green card and notes. Fyllyo fills Form I-864 on your Mac. Anything the documents disagree on is left for you, with the reason.
Where AI form filling goes wrong on Form I-864
Most of Form I-864 is copying names, dates and addresses. The trouble starts where software has to reason across several documents. These are the common places AI tools and autofill get it wrong. What the form requires is for USCIS to say. Follow its instructions. USCIS official page for Form I-864.
Two different numbers for one income
The notes give one salary and the pay stubs add up to another. A tool that quietly picks one fills a number nobody checked.
Masked Social Security numbers
Pay stubs and statements often show an SSN as XXX-XX-4821. Copied into the form, that’s an invalid number in a required field.
Someone else’s address
Pay stubs carry the employer’s address and bank statements the bank’s. Software can take the first address it finds.
Identity numbers that look alike
The form asks for an A-Number, a USCIS online account number and a Social Security number, and documents label them in different ways. One can land in another’s box.
A section that only sometimes applies
Part 7, the sponsor’s assets, is for when household income is below the requirement, as the form says. Filling it from every bank statement adds answers that don’t belong.
Tax years in any order
Tax transcripts arrive in whatever order they were saved, and the form lists the most recent year first.
How Fyllyo takes care of them
With a test client and seven documents (intake notes, a green card, two pay stubs, tax transcripts and two bank statements), Fyllyo filled 54 fields in 26 seconds. It left 3 for the preparer, each with the reason.
- Pay per paycheck, not per year. Works out how often the sponsor is paid from the pay dates and turns the paycheck into a yearly figure ($2,980 × 26 = $77,480). It never uses a year-to-date total as annual income.
- Two different numbers for one income. Leaves the field empty and shows both amounts, and holds back anything worked out from it, so you decide.
- Masked Social Security numbers. Checks the number before filling it. A masked one is left for you to fill.
- Someone else’s address. Reads only the sponsor’s own address, never an employer’s or a bank’s.
- Identity numbers that look alike. Fills a Social Security number only when a document labels it as one, and never puts the same number in two identity boxes.
- A section that only sometimes applies. Fills Part 7 only when that’s the case, and tells you about assets it kept off the form.
- Tax years in any order. Sorts the returns by year, newest first.
How much of a Form I-864 does Fyllyo fill?
Fyllyo fills 164 of the 196 fields on Form I-864 from the client’s documents. Lines the documents don’t support stay blank and are listed for you to check.
You do
- How the intending immigrant is related to the sponsor
- The business name
- The sponsor's relationship to the intending immigrant
- and 29 more fields that need your judgement
You confirm on every form
- Sponsor's family name
- Sponsor's given name
- Sponsor's middle name
- Sponsor's date of birth
- Sponsor's U.S. Social Security Number
- and 9 more
What do you give Fyllyo?
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.
Filling Form I-864 for clients? Compare AI form fillers for law firms.
Client data stays on your Mac
Client documents and the filled form never leave your computer. Fyllyo uploads nothing. Once it is set up, filling works offline.
What Fyllyo doesn’t do
Fyllyo doesn’t decide what to file, give legal or tax advice, or submit Form I-864 for you. Use the USCIS’s official page for Form I-864 and your professional judgement. Fyllyo does the reading and the typing.
Which edition of Form I-864 does Fyllyo fill?
The built-in Form I-864 is the edition dated 08/24/26. For a different edition, add that fillable PDF as your own form. You set it up once, then fill it like this one. Set up that fillable PDF as your own form →
What if a document is a scan or a photo?
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 I-864 still shows the line it came from.
Fill your next Form I-864 on your Mac
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.