Filing season is a logistics problem before it is a tax problem. The physicians who have a miserable April are rarely the ones with complicated returns — they are the ones assembling documents in a weekend, discovering a missing form on the 12th, and filing with a hole in the return. This checklist is the January-to-April protocol for the 2026 tax year (the return you file by April 15, 2027): what to collect, organized by how you earned it; the physician-specific items that get missed year after year; what a CPA actually needs from you; and what an extension does and does not buy. It applies equally whether you self-prepare or hand off.
Collect by income stream, not by form number
Forms arrive on different schedules from different senders, and the reliable way to know you have everything is to inventory your income streams first, then check forms off against them.
| Income stream | Form(s) | Typical arrival |
|---|---|---|
| Employment (each employer, including a residency you left mid-year) | W-2 | By January 31 |
| / locums / medical directorship | -NEC (per payer over $600) | By January 31 |
| Brokerage account (taxable) | Consolidated 1099-B / 1099-DIV / 1099-INT | Mid-February, corrections into March |
| Bank interest | 1099-INT | Late January |
| IRA or / distributions and conversions — including a | 1099-R | By January 31 |
| distributions | 1099-SA | By January 31 |
| Partnership or S-corp ownership (practice buy-in, surgery center, real estate syndication) | Schedule K-1 | March 15 — but extended partnerships run to September 15 |
| Student loan interest paid | 1098-E | Late January |
| Mortgage interest | 1098 | Late January |
Two timing warnings do most of the protective work here. First, brokerages routinely issue corrected consolidated 1099s in late February and March; filing in early February from the first version is how amended returns happen. If you hold a taxable brokerage account, plan to file in mid-March or later. Second, K-1s answer to a different calendar entirely.
Important
If you own any piece of a partnership — a practice buy-in, an ambulatory surgery center share, a real estate syndication — your K-1 may legitimately not arrive until September 15 under the entity's extension. You cannot file an accurate return without it. K-1 owners should plan on extending their own return as a default, not as a failure.
Missed a 1099 because a hospital sent it to your old apartment? The income is still taxable and the IRS already has its copy. Your own deposit records are the backstop: reconcile 1099 totals against what actually hit your bank account.
The five items physicians miss, every single year
— the backdoor Roth form. If you executed a backdoor Roth IRA — a nondeductible contribution followed by a Roth conversion — Form 8606 must be filed for every year it happens, reporting the nondeductible contribution and its basis. No form arrives in the mail to remind you; the 1099-R from your custodian reports the conversion as if it were fully taxable, and only your Form 8606 establishes that it is not. Skipping Form 8606 converts a tax-free maneuver into a taxable one on paper — the single most common physician filing error, and preparers miss it when clients forget to mention the contribution. The full mechanics, including fixing prior missed years, are in the Form 8606 companion article.
Form 1098-E — collect it, then expect nothing. The student loan interest deduction is capped at $2,500 and phases out at 2026 modified AGI of $85,000–$100,000 single and $175,000–$205,000 married filing jointly (Rev. Proc. 2025-32). Nearly every attending is above the ceiling, and married filing separately is ineligible entirely — so for most readers this form changes nothing. The exceptions are real, though: an intern year, a part-year transition return, or a resident household under the joint threshold. Collect the form; let the software decide.
Forms 1095-A/B/C — health coverage. Usually informational, with one live wire: if anyone in the household bought marketplace coverage (a gap year, a spouse's coverage, a child), Form 1095-A must be reconciled on the return, and with the enhanced subsidies expired as of December 31, 2025, repayment surprises are back for 2026 coverage.
Form 8889 — required whenever an HSA was touched. Any contribution (including employer dollars shown in W-2 box 12, code W) or any distribution triggers the filing requirement. Distributions also need your own records that the spending was qualified medical expense — the custodian does not track this for you.
Moonlighting expense records. A 1099 physician deducts legitimate business expenses — licensure, DEA registration, board fees, malpractice tail, CME, mileage between work sites — but only the ones that were recorded. January is when you assemble the year's log and receipts; April is too late to reconstruct honestly. What counts, and what is aggressive fiction, is covered in legitimate tax reduction.
Quick takeaway
Of everything on this page, Form 8606 has the highest miss rate and the worst failure mode. If you did a backdoor Roth in 2026 — or any prior year without filing it — flag it explicitly to whoever prepares the return. It is fixable retroactively, but only if someone notices.
The CPA handoff package: what a preparer actually needs
If you use a preparer, the quality of the return tracks the quality of the handoff. The package:
- Last year's complete return, including all schedules and worksheets — the single most information-dense document you own, and essential for a new preparer (it carries basis, carryforwards, and depreciation schedules).
- Every form from the table above, checked off against your income-stream inventory.
- A one-page life-events memo: new job, new state, marriage, child, home purchase or sale, practice buy-in, moonlighting started or stopped. Each of these changes the return; none of them appears on any form.
- Estimated payment records — dates and amounts of every federal and state payment, with confirmations.
- The explicit backdoor Roth flag: contribution date, amount, conversion date.
- Charitable receipts — for 2026, itemizers deduct only gifts above 0.5 percent of AGI (Pub. L. 119-21), so the total matters, and any single gift of $250 or more needs a written acknowledgment.
Whether you should be paying for preparation at all — and when self-preparation genuinely suffices for a physician return — is its own decision, worked through in CPA versus tax software for physicians.
Key insight
Send the package in February even if K-1s are outstanding. Preparers triage by arrival order, and a February client with one pending K-1 gets an extension filed calmly and a return finished in early fall; an April client gets a rushed return or a scrambled extension. The handoff date, not the filing date, is the deadline you actually control.
The extension extends filing, not payment
Form 4868 grants an automatic extension to file — for the 2026 tax year, from April 15, 2027 to October 15, 2027. It does not extend the payment deadline by a single day. Tax owed is still due April 15, and the balance accrues interest (and, if you fall below the paid-in thresholds, penalties) from that date regardless of the extension.
The protocol, then: estimate your total tax by early April using the documents in hand, pay the estimated balance with the extension, and file the precise return when the last K-1 arrives. An extension executed this way costs nothing, triggers nothing, and does not increase audit risk. An extension is a routine tool, not a red flag — but only when it travels with a payment.
Common questions
What if I file and then a corrected 1099 shows up?
You amend (Form 1040-X) if the correction changes the tax. Better to prevent it: if you hold a taxable brokerage account, treat mid-March as your earliest filing date, since corrected consolidated 1099s cluster in late February and March.
I forgot Form 8606 in a prior year. Is that fixable?
Yes. Form 8606 can be filed late — standalone for a prior year — to establish the nondeductible basis, and the IRS has historically accepted this without drama, though a $50 penalty can technically apply. Fix it before the next conversion compounds the problem; the Form 8606 article covers the cleanup.
Do I really need to keep HSA receipts?
Yes, indefinitely, for any distribution you claim as qualified — and if you use the HSA as a long-horizon account and reimburse yourself years later, the receipt from the original expense is the entire audit defense. A scanned folder solves this in minutes per year.
Is filing an extension a bad sign to the IRS?
No. Millions extend annually, the extension is automatic, and there is no evidence it raises examination risk. The failure mode is extending without paying — that runs interest from April 15 — not extending itself.
What to do next
- In January, write your income-stream inventory for 2026: every employer, every moonlighting payer, every account, every partnership. This costs fifteen minutes and is the checklist everything else checks against.
- Create a single folder — physical or digital — and route every arriving tax form into it the day it arrives, no decisions attached.
- If you did a backdoor Roth in any year, confirm a Form 8606 exists for each one; if not, schedule the cleanup now.
- Reconcile 1099-NEC totals against bank deposits in February; chase or self-report anything missing.
- Deliver the CPA package (or open the software) by the end of February; if any K-1 is outstanding, plan the extension-with-payment now, not on April 14.
- On April 15, 2027: return or extension filed, and the payment made either way.
A physician return is rarely hard; it is merely wide — many streams, many forms, a few items nothing reminds you about. The inventory-first protocol above works with or without us. This is education, not individualized financial advice.