Form 5329 has two possible paths to the IRS, and the right path depends on a single question: are you filing a Form 1040 (or 1040-SR, 1040-NR, or 1041) for the same tax year? If yes, Form 5329 attaches to your return and follows the same filing method as the return itself. If no, you file Form 5329 by itself, on paper, mailed to the IRS service center for your state.
That is the whole rule. The complications come from edge cases — RMD waiver requests, e-file software that handles 5329 inconsistently, and the question of which address to use when filing standalone. Each is covered below.
Calculate Your RMDPath 1 — Filing with your Form 1040
If you are filing a Form 1040, 1040-SR, 1040-NR, or 1041 for the same tax year, Form 5329 goes with the return. The form is part of your return package, not a separate filing.
Method follows the 1040. If you e-file the 1040, your tax software submits Form 5329 with it electronically. If you paper-file the 1040, you print Form 5329 and include it in the same envelope, sent to whichever IRS address is correct for your state and your with-payment/without-payment status (the same address pairing applies to 1040 filers regardless of whether 5329 is attached).
One nuance for missed-RMD waiver requests under Part IX. When you write "RC" on line 54 to request a reasonable-cause waiver, you must attach a written explanation. Most major tax software platforms can e-file Form 5329 with the RC notation, but the attached written statement may need to be transmitted as a PDF attachment or, depending on the software, may force the entire return to paper. The IRS instructions do not explicitly require paper-only filing for an RC waiver request — but if your software cannot attach the written statement electronically, paper is the fallback. The form-content rule is identical either way: the IRS needs both the form and the statement.
Path 2 — Filing Form 5329 standalone
If you are not required to file a Form 1040 for the year (for example, because your income falls below the filing threshold), Form 5329 is filed by itself. The IRS instructions are direct on the method: standalone Form 5329 cannot be filed electronically. Paper only.
When filing standalone:
- Print Form 5329 with your name, SSN, and address on page 1.
- Sign and date page 3 — a standalone Form 5329 is treated as a return in its own right, and the signature requirement applies.
- Attach any required statement (the RC waiver written explanation for Part IX, the exception-code documentation for Part I, the excess-contribution corrective-distribution detail for Part III, etc.).
- Mail it to the IRS service center for your state.
The service-center address to use is the same address you would use to file a paper Form 1040 without payment for your state. The IRS publishes the current state-by-state address list at irs.gov — Where to File Paper Tax Returns With or Without a Payment. The list changes periodically; pull it fresh rather than relying on a printed copy from a prior year.
The decision tree
- Filing a 1040 this year? Form 5329 goes with it. Method follows your 1040 (e-file or paper). If you have an RC waiver request and your software cannot attach the written statement, switch to paper for the whole return.
- Not filing a 1040 this year? Standalone Form 5329, paper only. Sign page 3. Attach any required statement. Mail to your state's IRS service center using the without-payment address from the current IRS list.
- Filing late (after April 15 / your extended due date)? Same rules, plus interest and penalties may apply to any unpaid additional tax. A late RC waiver request still gets filed the same way — paper if standalone, with the 1040 if you are filing a late return. Late filing does not by itself disqualify the waiver request, but it weakens the reasonable-cause posture; address the lateness in the written statement.
For the line-by-line Form 5329 walkthrough on a missed RMD, see Missed RMD: How to Fill Out Form 5329 Part IX. For the sample waiver letters that pair with the form, see RMD penalty waiver letter sample. For the broader waiver-and-penalty context, see IRS waiver for a missed RMD. For the calculator and deadline tracking that prevents the next miss, see how SimpleRMD works or the main RMD overview.
This article is for informational purposes only and does not constitute tax, legal, or financial advice. IRS rules and tax laws are subject to change. Consult a qualified tax professional or financial advisor for guidance specific to your situation. SimpleRMD is a calculation and tracking tool — not a financial advisory service.
Sources: IRS.gov (Form 5329 Instructions (2025), About Form 5329, Where to File Paper Tax Returns). Rules confirmed current as of May 2026.