Submit missing documents | Washington State Working Families Tax Credit

Upload a document with the letter ID

If you received a letter requesting missing or unclear documents, you can submit them by uploading your files.

Upload a document

It may take the department up to 30 days to review your documents and decide if you’re eligible for the WFTC.

Woman holding a letter while in front of a computer

How to upload missing documents online

Click Upload a document.
On the Respond to a Letter page, enter the Letter ID and Last Name of the applicant.
Click the Next button.
On the Attachments page, for each attachment, click the Add Attachment button, select the attachment Type using the drop-down menu, click Choose File, select the file, and click OK .
If necessary, enter any comments you would like included with your attachments in the Comments field.
Click the Next button.
On the Summary page, review the attachments and comments, then click the I agree to the statements above and attest the information in this application is accurate to the best of my knowledge checkbox.
Click the Submit button.
To print the Confirmation page, click the Print Confirmation button and use your browser options to either print or save it as a PDF. This option is only available on this page. If you want to print or save it, print before you leave this page.
Click OK.

Frequently asked questions

Where can I find my Letter ID?

Your Letter ID is on the letter sent by the Department of Revenue. Look at the top right corner, just below the date. When asked, enter this number in the request field.

Do I need to log in?

No, you don’t need to log in. If you received a letter from the Department of Revenue, use the Letter ID in the top right corner. Follow the How to Upload Missing Documents Online instructions to submit your documents.

What file type do I need to upload?

File types for attachments

Our online system, My DOR, accepts a variety of file types for uploaded documentation. If there are specific format requirements, they will be listed with the requested documentation.

Most common for images and documents:

.bmp (Bitmap Image File)
.gif (Graphical Interchange Format File)
.jpg and .jpeg (JPEG Image)
.pdf (Portable Document Format file)
.doc and .docx (Microsoft Word document)
.xls and .xlsx (Microsoft Excel spreadsheet)
.csv (Comma-separated values)
.zip (Data compression file)

Apple iOS users: our system does NOT accept HEIC (High Efficiency Image Format) files. Please convert them to a .jpeg or other accepted file format.

Single Page .pdf File Size: Do not submit a one-page .pdf file that is over 1,000 KB (1 MB) in size. This size limit does not impact files with multiple pages. To reduce the size of a one-page .pdf file, try compressing it, saving it as a .jpg, or resave it as a .pdf using the Print option in Adobe Acrobat.