Masked W-9 TINs

Collect W-9s without holding tax IDs in the clear

Vendor tax IDs are stored masked and only the last four digits are ever shown.

The W-9 problem

A W-9 carries a Social Security or Employer ID number. Most teams collect them by email and keep the numbers in spreadsheets, so one forwarded message or shared folder exposes every vendor's tax ID.

myCertGate fixes this by keeping only what you need: proof the form is on file and a masked number to match it.

Vendor record

Legal name
Northbeam Steel Works LLC
Tax ID
**-***4821
W-9 status
On file

Sample record for illustration.

How it works

Four safeguards on every W-9

Masked, never stored in full

The tax ID on file is a masked value. The full number isn't kept in vendor records, so it can't leak from them.

Last four digits only

Vendor profiles, lists and exports show ***-**-1234, enough to match a vendor and nothing more.

Direct vendor upload

Vendors upload the W-9 themselves through a one-job link. No inbox forwarding, no shared drives.

Private, workspace-only files

The uploaded form sits in private storage that only your workspace's members can open.

Compared

Email and spreadsheets vs. myCertGate

 Typical processmyCertGate
How W-9s arriveEmail attachments, forwarded aroundVendor uploads through a secure link
Tax ID in your recordsFull number in spreadsheetsMasked, last four shown
Where files liveInboxes and shared foldersPrivate workspace storage
Who can see themAnyone with the folder or emailYour workspace members only
FAQ

W-9 and tax ID questions

Does myCertGate store a vendor's full SSN or EIN?

No. Only a masked version of the tax ID is saved, and screens and exports show just the last four digits.

How do vendors send their W-9?

Through a secure upload link you send them. The file goes straight into your workspace's private storage, with no email attachment and no vendor account.

Who can open the uploaded W-9 file?

Only members of your workspace. Files are kept in private storage and are never published on a public link.

Can I still tell which vendor a W-9 belongs to?

Yes. The last four digits plus the vendor's legal name and the uploaded form are enough to match records for 1099 prep and payment checks.