The documents you need from tax clients fall into four groups: income forms such as W-2s, 1099s, K-1s and SSA-1099s; deduction and credit records such as 1098s, childcare receipts and donation letters; identity items such as photo ID and IP PINs; and prior-year items such as last year's return and estimated payment records.
Which income documents do tax clients owe you?
Income documents are the forms a payer sends to report money the client received during the year. For most individual tax clients they are the W-2 from each employer, the 1099 series from banks, brokers and payers, the SSA-1099 for Social Security, the 1099-R for retirement distributions, and a Schedule K-1 from each partnership or S corporation.
Each form has a different issuer, and the issuer is what you ask the client to look for. A client rarely knows what a "1099-DIV" is. They do know they have an account at a brokerage. Ask by issuer and the form name follows.
Wages and self-employment income
The W-2 comes from each employer the client worked for during the year, including a job that ended in March. The IRS General Instructions for Forms W-2 and W-3 say employers generally must furnish employee copies by February 1, 2027 for 2026 wages. A corrected W-2 arrives as a Form W-2c.
Clients with freelance or contract work receive Form 1099-NEC. The IRS Instructions for Forms 1099-MISC and 1099-NEC now put nonemployee compensation in box 1a and set the reporting threshold at $2,000 for payments in tax years beginning after 2025. A client paid $1,500 by one customer may get no form at all, and the income is still reportable, so ask about payments that did not come with a form.
Clients paid through card processors or payment apps may get Form 1099-K. The IRS page Understanding your Form 1099-K gives the current threshold as payments over $20,000 in more than 200 transactions.
Investment, retirement and pass-through income
Banks send Form 1099-INT and brokers send 1099-DIV and 1099-B, often bundled as one consolidated statement. Crypto platforms that act as brokers now send Form 1099-DA. The IRS digital assets page says brokers report gross proceeds for transactions on or after January 1, 2025 and basis for certain transactions on or after January 1, 2026.
Retirees bring the SSA-1099 and a 1099-R from each pension, annuity or IRA that paid out. IRS Publication 915 describes the SSA-1099 arriving in January of the year after the benefits were paid.
Partners and S corporation shareholders bring a Schedule K-1. These come last. The IRS Instructions for Form 1065 set March 15 as the due date for a calendar-year partnership return, and a partnership that files Form 7004 for an extension can send K-1s later still.
Deduction and credit records to request from tax clients
Deduction and credit records are the documents that support amounts a client subtracts from income or claims as a credit. The usual ones are Form 1098 for mortgage interest, 1098-E for student loan interest, 1098-T for tuition, childcare provider details, charitable receipts, HSA forms and Form 1095-A for marketplace health coverage.
Forms a lender, school or insurer sends
Form 1098 comes from the mortgage servicer. The IRS Instructions for Form 1098 require it when the lender receives $600 or more of mortgage interest, and box 10 may show real estate taxes paid from escrow. Form 1098-E comes from the student loan servicer. Form 1098-T comes from the college.
The 1098-T matters for education credits. The IRS Instructions for Form 8863 say the law generally requires the taxpayer or dependent to have received a Form 1098-T to claim the American opportunity or lifetime learning credit, with exceptions spelled out in the instructions.
Form 1095-A is the one health form worth waiting for. The IRS questions and answers on health care information forms say a client who expects a 1095-A should wait to file until it arrives, because it is used to complete Form 8962 for the premium tax credit.
HSA owners receive Form 1099-SA for distributions. The IRS Instructions for Form 8889 point to box 1 of Form 1099-SA for total distributions.
Records the client keeps
Some records come from no issuer at all. Childcare is one. The IRS Instructions for Form 2441 ask for each care provider's name, address and taxpayer identification number, and Form W-10 is one way to collect them. Ask for the provider's details, not only the amount paid.
Charitable gifts are another. IRS Publication 526 says a deduction for a contribution of $250 or more needs a contemporaneous written acknowledgment from the charity, and noncash gifts over $500 need Form 8283. Ask for the charity's letters, not a list the client typed up.
Identity and prior-year items tax clients forget
Identity and prior-year items are the documents that let you file the return and carry figures forward, as opposed to documents that report income. Tax clients forget them because no payer mails them in January. They include photo ID, Social Security cards, IP PINs, last year's return, estimated payment records and the bank details for a refund.
The IRS checklist for free tax return preparation is a useful public reference. It asks for photo ID for the taxpayer and spouse, Social Security cards for everyone on the return, birth dates, a copy of last year's federal and state returns, and proof of the routing and account numbers for direct deposit, such as a blank check.
The IP PIN catches clients out every year. The IRS page on getting an identity protection PIN says an IP PIN is valid for one calendar year, a new one is generated each year, and it must be used on any federal return filed during that year. Last year's number will not work. Ask every client who had one, including for dependents.
Estimated payments are the other gap. A client who paid quarterly often remembers some payments and not others. The IRS Instructions for Form 1040 say the estimated payments line includes any overpayment applied from the prior-year return, so last year's return and the payment confirmations both belong on the list. The tax preparation checklist before data entry covers how a preparer confirms those amounts before entry starts.
How do life events change what tax clients send?
A life event is any change during the year that adds or removes a document from the client's list: marriage, divorce, a birth or adoption, buying or selling a home, a new job, retirement or a move to another state. Each one changes which forms arrive, so ask about events before the client starts gathering.
The common changes look like this:
- Marriage or divorce: a second set of W-2s and 1099s if filing jointly, a divorce decree, and the former spouse's details if estimated payments were made jointly.
- New child: the child's Social Security card and date of birth, and childcare provider details once care starts.
- Home purchase: the closing statement and a new Form 1098, often from a servicer the client has never heard of.
- Home sale: Form 1099-S reporting the sale, and the purchase and improvement records for the home.
- Job change: a W-2 from each employer, plus a 1099-R if an old employer's retirement plan paid out.
- Retirement: the first SSA-1099 and 1099-R. IRS Publication 590-B sets age 73 as the point when required minimum distributions from IRAs begin, so the 1099-R list grows later.
- State move: the move date and the income earned before and after it. The IRS Form 13614-C intake sheet used by volunteer preparers asks "Did you live in two or more states" for this reason.
Ask in plain words. "Did you buy or sell a home this year?" gets an answer. "Any real estate transactions?" gets a shrug.
Documents to stop requesting from tax clients
Documents to stop requesting are forms that are informational only, arrive after the filing season, or duplicate a figure already on another form. Asking for them makes the list longer, makes clients wait for paper they do not need, and hides the items that do matter.
Forms 1095-B and 1095-C are the clearest case. The IRS health care information forms page says it is not necessary to wait for them to file and that they should not be attached to the return. A client who thinks they must send one may hold the whole folder until it shows up.
Form 5498-SA is another. The IRS General Instructions for Certain Information Returns give May 31 as its furnish-by date, after most returns are filed. Asking for it in February sends a client looking for a form that has not been mailed yet.
A third case is the full brokerage statement when the consolidated 1099 already carries the figures. Ask for the 1099 itself, and request transaction detail only where basis is missing. A fourth is last year's W-2s for a client whose return you prepared, because you already have them.
Not every quiet form can be dropped. A client with a Form 1095-A should still wait for it, because the premium tax credit is figured from it. Knowing which forms to wait for and which to skip is what keeps the list short.
A master table for one season
This example lists the documents a firm might expect across its individual tax clients. Issuers in the third column are fictional examples. Timing for information returns follows the furnish-by dates in the IRS General Instructions for Certain Information Returns, which move to the next business day when they fall on a weekend or holiday.
| Group | Form | Example issuer | Usually arrives by |
|---|---|---|---|
| Income | W-2 | Northgate Media Group (employer) | Late January |
| Income | 1099-NEC | Fieldwork Collective (customer) | Late January |
| Income | 1099-INT | Harbor Federal Credit Union | Late January |
| Income | 1099-DIV and 1099-B | Ridgeline Brokerage, account XXXX-4821 | Mid-February |
| Income | 1099-DA | Example Digital Exchange | Mid-February |
| Income | SSA-1099 | Social Security Administration | January |
| Income | 1099-R | Example Pension Trust | Late January |
| Income | Schedule K-1 | Canopy Partners LP | March or later |
| Deductions | 1098 | Example Mortgage Servicing | Late January |
| Deductions | 1098-E | Example Student Loans | Late January |
| Deductions | Charity acknowledgments | Example Food Bank | When the gift is made |
| Credits | 1098-T | State University of Example | Late January |
| Credits | Childcare provider details | Little Oaks Day Care | Ask the provider |
| Credits | 1095-A | Health insurance marketplace | Wait for it |
| Identity | Photo ID and SS cards | Client | Already held |
| Identity | IP PIN | IRS | New each calendar year |
| Prior year | Last year's return | Firm file or client | Already held |
| Prior year | Estimated payment records | Client's bank or IRS account | Already held |
A firm's own table should be narrower for each client. The client-facing printable layout shows how to turn this into a page a client can fill in, and the tax document checklist by client type gives versions for W-2 earners, retirees, landlords and the self-employed. To build each client's version from what they filed last time, see reading last year's return line by line.
Once documents start arriving, Schema CPA classifies each page by document type, issuer and period, and compares the set against last year's documents; the document categories on the homepage list what it reads. For getting the documents to the firm in the first place, the client document collection category covers upload links, email intake and phone scans.