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Free fillable forms
Official IRS and USCIS PDFs, filled in your browser. Nothing you type is uploaded, and every box stays editable in the PDF.
For contractors and vendors
For employers
Edition 01/20/25
Fill out Form I-9
Employment eligibility for every new hire: Section 1 and the employer’s part of Section 2.
Fill it free 2026Fill out Form W-4
Federal income tax withholding for 2026, with Step 3 worked out for you.
Fill it free Rev. March 2026Fill out Form 941
The quarterly payroll tax return, with lines 5 to 15 worked out for you.
Fill it freeFor business owners
Every form is filled inside your browser. Nothing you type, including Social Security numbers and EINs, is sent to MailMergic or anyone else, and nothing is stored.
Need the same form for a whole list?
MailMergic fills one form per row of your spreadsheet: a W-9 for every vendor, a 1099-NEC for every contractor, an I-9 packet for every new hire. Free to try, no credit card.
Fill forms from a spreadsheetQuestions about the form fillers
Are these the official forms?
Yes. Each page fills the agency’s own fillable PDF, the current revision, which we keep a copy of on this site. Only your answers are added; the boxes stay editable.
Is what I type sent anywhere?
No. The PDF is filled inside your browser. Nothing you type, including Social Security numbers and EINs, is sent to MailMergic or anyone else, and nothing is stored.
Do these pages file the form for me?
No. You download the filled PDF, sign it where the form asks, and give or send it to whoever needs it. Some forms are never sent to the agency at all, such as the W-9 and the I-9.
Are they really free?
Yes, one form at a time, with no account. MailMergic makes money when businesses fill many forms at once from a spreadsheet.
These pages explain how to fill out each form. They are not tax or legal advice. MailMergic is not affiliated with the IRS, USCIS or any government agency.