Income records
W-2s from employers, 1099s from clients and platforms, K-1s from partnerships, and statements for retirement or Social Security income.
Tax & CPA workflow
A document request list is the list of files an accounting firm needs from a client to complete a piece of work. It names each document, tracks which have arrived, and shows what is still outstanding, so nobody has to reconstruct the state of a file from an email thread.
The list is built around what the work needs, so it changes from client to client. Most cover the same six categories.
W-2s from employers, 1099s from clients and platforms, K-1s from partnerships, and statements for retirement or Social Security income.
Year-end brokerage summaries, interest statements, dividend records, and records of anything sold during the year.
Mortgage interest statements, property tax records, closing statements for anything bought or sold, and rental income records.
Charitable giving receipts, medical expense records, education costs, childcare statements, and business expense records for the self-employed.
Social Security numbers for anyone on the return, dates of birth for dependents, and bank details for a refund.
Last year's return, and any carryforward schedules attached to it. New clients are usually asked for two or three years.
The two arrive together often enough that people treat them as one thing.
A tax organizer asks questions. It is about your situation: what changed, what applies to you, what the preparer needs to know before deciding which forms the return requires.
A document request list asks for files. It names specific documents and tracks which have arrived.
The organizer usually comes first and shapes the list. If you answer that you sold a rental property, the request list grows a closing statement and a depreciation schedule that it would not otherwise contain.
Firms that send both at once are covering the common case. Firms that send the organizer first and build the list from your answers send you a shorter list, because it only contains things that apply to you.
The honest answer is that it depends on what happened to you last year, which is why firms ask questions before they ask for files.
That said, most returns draw on the same core set. Anything that reports income to the IRS will also come to you, and the firm needs a copy of each one. If a form arrived in the post or by email with a number on it, assume it is needed.
The second group is less obvious: records that support a deduction. Nobody sends you a form for charitable giving under a certain size, or for the mileage you drove to a client site. If you want to claim something, the record has to come from you.
The third group is the one people forget. Documents about events rather than income. A house sale, a state move, a business started, a marriage. These often have no single form attached and only surface if you mention them.
If you are unsure whether something counts, send it. A preparer would rather discard a document they do not need than ask for one you did not think to mention.
A general checklist to work through. Your firm's list will be shorter and more specific, because it is built for your situation rather than for everybody.
W-2 from each employer, and any statement of benefits, stock compensation or retirement contributions.
1099-NEC and 1099-K forms, your own record of income not reported on a form, business expense records, and mileage logs.
Year-end brokerage statements, 1099-B for anything sold, 1099-DIV and 1099-INT, and cost basis records for older holdings.
Mortgage interest statement, property tax records, closing statements for purchases or sales, and income and expense records for rentals.
Social Security numbers and dates of birth, childcare provider details and amounts, and tuition statements.
Records of a move between states, a marriage or divorce, a new business, an inheritance, or a year you filed late or amended.
The format tells you a lot about how the season will go.
An emailed PDF checklist is the most common. It works, and it puts all the tracking on you and on whoever reads your replies. Nothing marks a document as received except somebody remembering.
A shared folder is better for the files and worse for the status. Documents land, but nobody can tell from looking whether the folder is complete or just partly filled.
A portal that lists each request separately is what most firms move toward. Each line has its own state, so both sides can see what has arrived without asking.
The difference matters most in March, when a firm is tracking the same question across dozens of clients at once.
Rarely because the client is unwilling. Usually because of one of three things.
The list is generic. It asks for documents that do not apply, so working through it means deciding which lines to ignore, and deciding is harder than answering.
The documents have not arrived yet. Brokerage statements and K-1s often turn up late, so a client who starts in January genuinely cannot finish, and the partly done list gets set aside and forgotten.
Nobody said what happens next. A list with no date attached and no sense of what it blocks competes badly with everything else in a person's week.
The fix for all three is the same: a shorter list, sent earlier, that says what is still outstanding rather than restating the whole thing each time.
Go down the request list and find each item. Starting from your own folder means sending what you have rather than what was asked for.
"2026 W-2 Acme Corp" beats "Scan_20260214_001". The preparer does not know what your files contain until they open them.
Income together, deductions together, property together. It matches how the return gets built.
If four things are outstanding, send the rest and say which four are coming. A preparer can start.
A note saying a K-1 is expected in March is more useful than silence. It lets the firm plan around it rather than chase.
Most firms follow up two or three times before it becomes a problem, and the follow-ups get shorter each time.
What usually happens first is that the preparer works around the gap. A return gets built to the point where the missing document is needed, then it stops and waits. Nothing is wrong yet; it is just parked.
If it stays missing into late March, the conversation changes. The realistic options are an extension, or filing without the item and amending later. Both cost something, and both are avoidable if the gap is flagged in February instead of discovered in April.
The item most likely to cause this is the one nobody controls: a K-1 from a partnership that files late. If you are waiting on one, tell the firm in January rather than in April.
Firms with good return rates tend to do the same things.
They build the list from the organizer rather than sending a standard one. A list containing only relevant lines gets finished, because there is nothing to skip.
They pre-populate what they already hold. If last year's document is on file and nothing changed, it should not appear as a request.
They track by line, not by client. Knowing that a client is at eleven of fourteen is a different conversation from knowing they have not finished.
They chase what is outstanding rather than resending the list. A follow-up that restates all fourteen items reads as though nothing has been noticed.
They put a date on it. A request without one is a suggestion.
Answers at a glance
A document request list names the specific files a firm needs and tracks which have arrived. A tax organizer asks questions about your situation and what changed during the year. The organizer usually comes first and shapes what goes on the list.
Anything reporting income to the IRS, any record supporting a deduction you want to claim, and any document relating to a change during the year such as a property sale or a move between states. Your firm's list will be specific to your situation.
No, and most people do not. Send what you have and tell the firm which items are still coming. A preparer can start on a partial file, and knowing what is outstanding is more useful than waiting for a complete set.
Tell the firm rather than leaving the line blank. Many documents can be obtained again from the issuer, and a preparer often knows the quickest route. A missing item that is flagged early is a scheduling question rather than a problem.
Name each file so someone who has not seen it can tell what it is, such as the year, the form and the issuer. Group them by category rather than by date, which matches the order the return is built in.
A general checklist covers every possible circumstance. A firm's list is built for your situation, usually from your answers on the organizer, so it is shorter and contains only lines that apply to you.
As soon as they arrive rather than when the set is complete. Employment and interest documents usually come in January, while brokerage statements and partnership K-1s often arrive later, so waiting for everything means starting in March.
A single outstanding document, most often a partnership K-1 that arrives late. Flagging it early lets the firm plan around it, where discovering it in April usually means an extension.
Some can. Where a document does not change year to year and the firm already holds it, there is no reason to collect it again. Whether that happens depends on how the firm stores what you have already sent.
No. An engagement letter is the contract defining what work the firm will do and what it charges, signed before anything begins. A document request list comes afterwards and gathers the files needed to do that work.
Most of a season goes on the gap between a list being sent and a list being complete. TaxFlo, one of the AmitaSoft platforms, works that gap: it asks each client only what their situation calls for, starts from what the firm already holds, and shows how close each engagement is to ready.
Read about TaxFlo →