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Fill Form I-508 with AIWaiver of Certain Rights

Add the filer’s intake notes, passport page, employment letter and signing records. Fyllyo fills Form I-508 on your Mac. Anything it can’t settle from the documents is left for you, with the reason.

Fyllyo fills the edition dated 04/16/24. Official form , instructions and page from the USCIS.

Page 1 of Form I-508 as Fyllyo filled it for a test client in a recorded run.
Page 1 of Form I-508, as Fyllyo filled it for a test client

Where AI form filling goes wrong on Form I-508

Form I-508 is short, but the file behind it is full of other people: a mission’s personnel officer, a law firm, an interpreter, family members, each with their own address, phone number and dates. Software slips when it takes the first one it finds. 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 instructions for Form I-508.

A compound family name and two given names

Passports often print all given names on one line and a family name of several words, such as “Ferreira da Costa”. Software that splits a full name on spaces can put part of the family name in the middle-name box.

Mail at the lawyer’s office, home in another town

Clients often have mail sent to their lawyer’s office while they live elsewhere, and an old apartment is still in the file. Software can treat the mailing address as the home address, answer that the two are the same, or copy the old apartment.

The mission’s address, its floor and its state

The employment letter, the law firm and the client each give an address, and the letters write the state out in full. Software can put the employer’s address in the home box, drop the floor, or copy “New York” where the form’s state box takes two letters.

Phone numbers that belong to someone else

An I-508 file holds many phone numbers: the filer’s office and mobile, the employer’s personnel office, the lawyer’s, the paralegal’s and the interpreter’s. Software can put any of them in the filer’s contact boxes, or copy a daytime number into the mobile box when there’s no mobile.

An interpreter who was booked but never interpreted

The file has a booking confirmation with an interpreter’s name, phone, email and language. Part 4 is for an interpreter who was actually used, as the form says. Software that finds a named interpreter can fill Part 4 anyway.

The paralegal prepared it, the attorney reviewed it

The attorney’s name, phone and signature are all over the file, so software often fills the preparer section with the attorney, even when someone else prepared the form.

The day it was signed, not the day it was booked

A signing file holds the first appointment, the rescheduled one, the attorney’s review date and each person’s actual signature, all written out in words. Software can take the first date it finds, give everyone the same date, or copy “October 14, 2026” into boxes that want MM/DD/YYYY.

How Fyllyo takes care of them

With a test client and seven documents (intake notes, a passport page, the mission’s employment letter, the client’s email, an interpreter booking, a signing record and the law firm’s preparer details), Fyllyo filled 36 fields in 13 seconds. Each answer shows the lines it came from.

Fyllyo's review of a test Form I-508: the filer's last name filled as Ferreira da Costa, shown with the lines from the client's email and the employment letter it came from.
  • A compound family name and two given names. Keeps a compound family name whole and uses the first and middle names the documents label as such. In the test, that was Ferreira da Costa, Mariana, Luísa.
  • Mail at the lawyer’s office, home in another town. Answers whether the two addresses are the same from what the documents say, fills the in-care-of name, and leaves out addresses the client no longer uses.
  • The mission’s address, its floor and its state. Puts the mission’s address only in the employment section, ticks the floor the letter names, and writes the state as its two-letter code.
  • Phone numbers that belong to someone else. Reads each person’s numbers separately and fills the filer’s boxes only with the filer’s own numbers. When a person has no mobile number, that box stays empty.
  • An interpreter who was booked but never interpreted. Fills Part 4 only when the documents say an interpreter actually interpreted. In the test the interpreter was sent away, and Part 4 stayed empty.
  • The paralegal prepared it, the attorney reviewed it. Fills the preparer section with the person the documents say prepared the form, with that person’s own organization, phone, email and signing date.
  • The day it was signed, not the day it was booked. Reads each person’s own signing date, never a scheduled one, and writes it as MM/DD/YYYY. In the test, that was 10/14/2026 for the filer and 10/15/2026 for the preparer.

How much of a Form I-508 does Fyllyo fill?

Fyllyo fills 76 of the 77 fields on Form I-508 from the client’s documents. Lines the documents don’t support stay blank and are listed for you to check.

You do

  • Name of person making the waiver

You confirm on every form

  • Filer's date of birth
  • Filer's last name
  • Filer's first name
  • Filer's U.S. Social Security number
  • Filer's Alien Registration Number
  • and 1 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-508 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-508 for you. Use the USCIS’s instructions for Form I-508 and your professional judgement. Fyllyo does the reading and the typing.

Which edition of Form I-508 does Fyllyo fill?

The built-in Form I-508 is the edition dated 04/16/24. 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-508 still shows the line it came from.

Fill your next Form I-508 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.