To tell a client what is still missing, describe each item the way it looks when it arrives: the form, the company that sends it, the account it belongs to and the year. "1099-INT from Harbor Federal, savings ending XXXX-4821, 2026" is something a client can find. "1099-INT" alone leaves them searching every bank they use.
Naming the issuer and account for each missing item
Each line on an outstanding documents list should name the issuer, meaning the employer, bank, broker or partnership that produces the document, and the account it relates to. A form number tells the client what kind of paper to look for. The issuer and account tell them which envelope, email or online login holds it.
A form number alone is ambiguous for most clients. A household with a checking account at one bank, savings at another and a brokerage account may receive three Forms 1099-INT. Asking for "your 1099-INT" invites the client to send whichever one they find first and assume the request is done.
The account number is what separates two forms from the same issuer. The IRS Instructions for Forms 1099-INT and 1099-OID require the payer to show an account number when it files more than one Form 1099-INT for the same recipient, and encourage an account number on every form. Quoting the last four digits on the list lets the client match the line to the box on the form they are holding. Keep it to the last four digits; the full number does not belong in an email.
The before-and-after example below shows the difference for one fictional client, Marcus Bell. All names, issuers and account digits are examples.
Before: a vague outstanding list
- W-2
- 1099-INT
- 1099-B
- K-1
- Property tax
After: an actionable outstanding list
| Document | From | Account or detail | Where it usually comes from |
|---|---|---|---|
| W-2 for 2026 | Fieldwork Collective (your second employer) | The job you left in May | Mailed, or in the employer's payroll site |
| 1099-INT for 2026 | Harbor Federal Credit Union | Savings ending XXXX-4821 | Harbor Federal online banking, tax documents |
| 1099-B for 2026 | Ridgeline Brokerage | Account ending XXXX-9135 | Ridgeline's consolidated tax statement |
| Schedule K-1 for 2026 | Canopy Partners LP | Your partnership interest | Mailed or emailed by the partnership |
| 2026 property tax bill | County of Example | Parcel ending 2208 | County tax website or the mortgage escrow statement |
Every line in the second list can be acted on without a phone call. The first list needs one for almost every item. Building these lines from the firm's tracker, rather than retyping them, is covered in turning the tracker into the client's outstanding list.
Should the outstanding documents list show last year's amount?
An outstanding documents list can show last year's amount when it helps the client pick the right form, such as two similar 1099s from one broker or a W-2 from a short job. Usually the issuer and account are enough. A prior-year figure is a finding aid, never a hint at this year's number.
The prior-year amount helps in a few cases. A client with several small interest forms can tell the $12 credit union form from the $1,400 money market form at a glance. A client who left a job early in the year may not remember the employer's legal name but will recognise a small wage figure.
The amount can also mislead. A client who sees "last year: $3,200" may assume a form showing $410 is the wrong one. If you include a figure, label it as last year's and say this year's will differ.
Think about the channel before adding any figure. IRS Publication 4557, Safeguarding Taxpayer Data, cautions firms to warn customers against sending sensitive data such as account numbers by email, and to encrypt sensitive data a firm must send that way. A rounded figure and the last four digits of an account give the client enough to find the form.
Saying why each still-missing document matters
One plain line on what each document does gives the client a reason to look for it. "This shows the interest your savings account paid you" turns a form number into something with a purpose. The line describes the form, not how the firm will use it on the return.
Keep each line short and factual. The point is to help the client recognise the item and see that the request is not busywork. A sentence that drifts into tax consequences, such as estimates of a refund change, is advice and belongs in a conversation with the preparer.
Some example lines for common items:
- W-2: shows the wages and withholding from an employer.
- 1099-INT: shows interest a bank or credit union paid.
- 1099-B: lists sales of shares or other holdings in a brokerage account.
- Schedule K-1: reports your share of a partnership's income.
- 1098: shows mortgage interest your lender received.
The reason line matters most for items clients tend to dismiss, like a small interest form or a K-1 from an investment they think of as dormant.
Is it ever right to say an item is no longer needed?
Yes. An outstanding documents list stays honest only when the firm removes items that no longer apply, such as a 1099-INT for an account the client closed or a W-2 from a one-off job. Confirm with the client first, then take the line off and note why. A list that never shrinks teaches the client to ignore it.
Ask a direct question rather than dropping the line quietly. "Our records show a Harbor Federal savings account last year. Is it still open?" lets the client confirm or correct. A closed account does not always mean no form: the IRS 1099-INT instructions require a form for each person paid $10 or more of reportable interest, so an account that paid interest before it closed can still produce one.
Write the reason in the file when a line comes off: "Savings closed June 2026, client confirmed no interest paid in 2026." Anyone who picks up the file later can see the item was considered, not forgotten. Clients who add income sources, rather than lose them, need lines added instead, which is covered in new income source not on last year's return.
Sending the list
Email is the usual home for a list like the one above, because a text cannot hold five lines with accounts. A short text pointing to the email can work for clients who agreed to receive texts; text message reminders for tax documents compares the two. When a client still does not respond to a clear list, the next steps are in how to chase clients for documents, and the lists themselves are the subject of the tax checklists and organizers category.
Schema CPA reads each page by type, issuer and period and drafts a reminder from the documents still missing, for the firm to check and send; the document types it reads are listed on the homepage.