Built for small businesses
Vendor forms. NDAs. W-9s.
All filled in seconds.
Your company details, your EIN, your COI numbers, your bank info — stored once, filled across every vendor portal, onboarding packet, and tax form. Per-seat for your team. Encrypted and audited.
🔒 Encrypted · Append-only audit log · Per-seat billing · No third-party AI
Built for vendor paperwork
W-9s, W-8BENs, COIs, NDAs, master service agreements, vendor questionnaires — your company details, ready everywhere.
Per-seat for your team
Each teammate has a private vault. One invoice for the company. Shared org vault, admin, and SSO on the roadmap.
Audit trail built in
Every fill, export, and e-signature event is logged in an append-only audit log. Compliance-friendly by default.
The paperwork that slows your business
Vendor onboarding
Company name, EIN, address, banking, references — filled in every new procurement portal.
NDAs & MSAs
Standard clauses across counterparties. Auto-fill names, dates, addresses. E-sign and export when ready.
Tax & 1099
W-9, W-8BEN, 1099-NEC, K-1 distributions. The same numbers, asked endlessly.
HR onboarding
New-hire packets, I-9, direct deposit, benefits enrollment — pre-filled before day one.
How it works
Set up your company vault
Add company name, EIN, addresses, banking, signers. Each employee adds their personal vault separately — private to them.
Open any vendor or HR form
Web portal, PDF, or Word doc. The extension and the app detect the fields and match them to the right vault.
Fill, e-sign, export
One click to fill. E-signature for completion. Every event lands in the audit log.
AES-256 encryption · Per-account isolation · Never auto-submits · Built by one engineer who got tired of filling out forms
The autofill that doesn't spy on you
Browser autofill ships your data to a third party. Password managers only do logins and cards. FillOnce fills standards-based forms, fillable PDFs, and Word documents from a vault you control, with AES-256 encryption at rest and strict per-account isolation — and matching runs without handing your data to an outside AI service (see how we protect data).
Simple, honest pricing
Web-form autofill is free, forever. Upgrade for unlimited documents, e-signature, and household profiles. Cancel in one click.
Free
Try the magic.
- ✓Unlimited web-form autofill
- ✓Vault for 1 person
- ✓5 stored documents
- ✓3 document exports / month
- ✓Encrypted — never sent to any AI
Pro
Most popularFor anyone who fills forms.
or $90/yr — 2 months free
- ✓Everything in Free
- ✓Unlimited documents & exports
- ✓E-signature on documents
- ✓Self-correcting field memory
- ✓Priority support
Family
One vault for the whole household.
or $149/yr — 2 months free
- ✓Everything in Pro
- ✓Up to 6 household members (kids, pets, contacts)
- ✓A separate profile for each member
- ✓Pick who a form is about — fills their data
- ✓Camp / school / medical form ready
Frequently asked questions
Does FillOnce support team seats?
Yes. The Business plan is per-seat ($15/seat/month). Each teammate gets their own private vault, billing rolls up to one invoice. Shared org vault, admin console, and SSO are on the roadmap — talk to us if you need them.
Can it handle vendor onboarding paperwork?
That's a primary use case. W-9s, W-8BENs, COI requests, NDAs, master service agreements, vendor questionnaires — FillOnce stores your company details once and fills the next form in seconds when fields can be detected.
Is there an audit trail?
Yes. Every fill, export, and e-signature event is logged in an append-only audit log. Required for compliance-conscious teams.
What about contractors and freelancers?
Pro ($9/month, single-seat) is built for solo contractors who fill client onboarding forms, NDAs, and 1099 paperwork all day.
How does this compare to DocuSign + a separate filler?
DocuSign alone is ~$25/seat/month for the personal Business plan and only signs. Adobe Acrobat is $24/month and only fills PDFs. FillOnce does both — plus standards-based web forms — for less.
Also fills life paperwork
FillOnce works for anyone with forms. Pick the version that sounds most like you — the product underneath is the same.
Families & parents
Camp, school, sports, medical — for every kid, without re-typing.
Job seekers
Standards-based application forms and résumé PDFs — fill the next one in one click.
Patients & caregivers
Intake forms, insurance, specialist referrals — for you and your family.
Renters & buyers
Rental apps, lease addenda, mortgage paperwork — your data, ready.
Students & applicants
College, FAFSA, scholarships, housing — built from forms you already filled.