What is a missing documents list?
Short answer
A missing documents list is the running, per-client record of the forms and answers a firm still needs before a return can start. It drives the reminders.
What it is
The list starts from what the client is expected to have: last year's forms, the organizer answers, the engagement scope. As documents arrive and are identified, items are ticked off. What remains is the list, and it is what the reminder message says.
Kept in someone's head or in a spreadsheet it goes stale by the second week of February. Kept in the intake system it updates itself when a document is filed.
Why it matters for a tax firm
Two of the biggest time sinks in a season, "where's my return" and chasing documents, come from nobody knowing exactly what is missing. A current list means one specific reminder instead of three vague ones.
How XyloDocs handles it
XyloDocs keeps the list per client and tax year, ticks items as documents are read and filed, and sends the reminder for what is left, in English or Spanish, over the channel the client uses.
Related terms
Read more on XyloDocs
Questions about Missing documents list
How often should document reminders go out?
One clear checklist up front, then a reminder only for what is still missing, no more than weekly, and stop when the file is complete. Over-reminding trains clients to ignore the messages.
What should the list include besides forms?
Answers the preparer needs: dependents' months at home, estimated payments made, the IP PIN, bank details for the refund, and the signed engagement letter.
Last reviewed: October 16, 2026. This glossary explains terms; it is not legal or tax advice. Check the cited source for the current rule.
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