Form 5498 Explained (2026): IRA Contributions, SEP, and Why It Arrives After You File + AI Agent Skill

You do not file Form 5498, and you do not attach it to your tax return. Form 5498, IRA Contribution Information, is filed with the IRS by your account custodian, not by you, and a copy is mailed to you by May 31, weeks after the April filing deadline, by design. It reports what went into your IRA for the year: contributions, rollovers, Roth conversions, and the account's year-end value. You keep it for your records.

Key takeaways:

• You never file or attach Form 5498; the custodian (your bank, broker, or IRA provider) files it and sends you a copy
• Custodians furnish it by May 31, after the April 15 deadline, because you can fund a prior-year IRA right up to that deadline
• Box 1 = traditional IRA contributions, Box 8 = SEP, Box 9 = SIMPLE, Box 10 = Roth IRA, Box 5 = December 31 fair market value
• 2026 IRA limit: $7,500, plus a $1,100 catch-up at age 50+; SEP limit: lesser of 25% of compensation or $72,000
• A SEP contribution you make in 2026 counts on the 2026 Form 5498 even when it is designated for tax year 2025, which is the single biggest source of confusion

Save this cheat sheet — key numbers in one image.

Do You Need Form 5498 to File Your Taxes?

No. You do not need Form 5498 in hand to file, and you never attach it to your return. Form 5498 is an information return: your IRA custodian sends one copy to the IRS and one copy to you, and the IRS already has its copy on file. You claim any deductible traditional IRA contribution on Schedule 1 using your own records (the deposit confirmation or year-end statement from your provider), not from Form 5498.

The form exists so the IRS can match what you report against what your custodian reports. If you deduct a $7,500 traditional IRA contribution and no custodian ever files a Form 5498 showing it, that mismatch is what draws a letter. So the form protects you as much as it verifies you, but it is a receipt, not a filing task.

Why Form 5498 Arrives After the Tax Deadline

Form 5498 is due to you by May 31, and that late date is deliberate, not a mailing delay. You can make a prior-year traditional or Roth IRA contribution any time up to the April filing deadline, so a custodian that mailed the form in January would miss every contribution made in the first three and a half months of the year. The May 31 deadline lets the custodian capture the full picture, including that last-minute April deposit for the prior tax year.

This creates the timing quirk that confuses most people: you file your return in April, then a tax form about that same year shows up in late May. Nothing is wrong. You already had the information you needed (your own contribution records) when you filed. The custodian is simply reporting it to the IRS after the fact.

Run Your Boxes Against Your Records

Form 5498 Box by Box: What Each Number Means

Form 5498 has fifteen numbered boxes, but four carry the weight for most filers: box 1, box 8, box 10, and box 5. The full map, using the official box titles from the Instructions for Forms 1099-R and 5498:

Two labels trip people up. Box 7 is where a self-employed person confirms the account is a SEP rather than a plain traditional IRA. And box 5, the year-end fair market value, is the number that later feeds your required minimum distribution math once you reach RMD age.

The SEP Timing Mismatch That Panics Self-Employed Filers

Boxes 8 and 9 follow a different clock than box 1, and that difference is the classic Form 5498 panic. Traditional and Roth IRA contributions (boxes 1 and 10) are reported for the tax year you designate them: a contribution made in February 2026 for tax year 2025 lands on the 2025 Form 5498. SEP and SIMPLE contributions (boxes 8 and 9) are reported for the calendar year they are actually deposited, no matter which tax year they cover.

Take Thea, a self-employed brand designer who nets $90,000 in 2025 and funds a SEP-IRA before her extended deadline. Her contribution math for the year, using the 20% effective rate that applies to self-employed SEP owners:

Thea deposits that $16,728 in March 2026 and designates it for tax year 2025. She deducts it on her 2025 return, filed that April. Then the reporting clock does its thing: because SEP contributions are reported in the year received, the deposit shows up in box 8 of the 2026 Form 5498, which her custodian mails by May 31, 2027, more than a year after she filed the return it belongs to. Nothing is wrong, and the IRS is not looking at the wrong year. Box 8 is always cash-basis, and the IRS reconciles the deduction to the deposit regardless of the calendar gap. At Anna Money, the most common May question from self-employed customers was a version of "why did I get a tax form after I already filed?" The answer was almost always Form 5498 reporting a SEP contribution.

If you want the deduction side of this (how the SEP write-off actually lowers your bill), the retirement plan deductions for the self-employed guide walks through SEP, SIMPLE, and solo 401(k) math, and the self-employment tax calculator sizes the half-of-SE-tax figure used in the table above.

Form 5498 vs 1099-R vs Form 5498-SA

These three forms get confused because they all involve tax-advantaged accounts, but they sit on opposite sides of the ledger.

Form 1099-R is the distribution-side opposite of Form 5498: one reports what you put in, the other reports what you took out, and in a rollover year you can receive both for the same dollars. Form 5498-SA is the HSA cousin of Form 5498, same "contributions in" job for a different account. If you have an HSA, the Form 5498-SA guide covers it, and the Form 8889 HSA guide covers the return you actually file to claim the HSA deduction.

2026 IRA and SEP Contribution Limits

The dollar limits that flow onto a 2026 Form 5498, from the IRS cost-of-living adjustment tables:

Two notes on the SEP line. The 25% is measured against compensation capped at $360,000 for 2026, and for a self-employed owner the effective rate works out to 20% of net earnings after half of self-employment tax, as in Thea's table. The IRA catch-up rose to $1,100 for 2026 after inflation indexing, up from the flat $1,000 it sat at for years.

What to Actually Do With Form 5498 When It Arrives

Form 5498 needs no action on your return, but it is not junk mail either. Three uses:

1. Verify it against your records. Confirm box 1, box 8, or box 10 matches what you actually contributed and deducted. A mismatch now is far cheaper to fix than an IRS notice in eighteen months.
2. Keep it for basis history. If you made nondeductible traditional IRA contributions, Form 5498 corroborates the basis you track on Form 8606; that basis is what keeps you from paying tax twice when you eventually withdraw.
3. Use box 5 for RMD planning. The December 31 fair market value is the starting number for required minimum distributions once you reach RMD age, so the form quietly becomes relevant decades after you file it.

File it with your tax records for the year and move on. There is no line on Form 1040 that asks for anything off of it.

What Form 5498 Is NOT

Form 5498 is frequently misread as something it isn't:

• ❌ It is not a tax bill. No box on it says you owe anything.
• ❌ It is not income. Contributions are money you put in, not money you earned from the account.
• ❌ It is not the form that claims your deduction. The traditional IRA deduction is claimed on Schedule 1; the form only reports that the contribution happened.
• ❌ It is not something to wait for before filing. You file with your own records in April; the form arrives in May.

Common Form 5498 Mistakes

Waiting for Form 5498 before filing. It arrives after the deadline by design. Filing your return does not depend on it.

Attaching it to your return. There is nowhere to attach it. The IRS already has the custodian's copy.

Assuming a SEP contribution is on the wrong year's form. Box 8 reports the year the money was deposited, not the tax year it counts for. A 2025 SEP contribution made in 2026 belongs on the 2026 form.

Ignoring a box 1 mismatch. If the amount differs from what you deducted, resolve it with your custodian now, because the IRS matches these figures.

Discarding it because "I don't file it." You don't, but box 5 and your nondeductible basis history can matter years later. Keep it.

Use This with Your AI Agent

If you're using Claude, ChatGPT, or another AI agent to make sense of a Form 5498, we've published an open-source skill that gives the agent the exact box-by-box logic from this article: reconciling box 1 against your Schedule 1 deduction, reading the box 7 checkboxes and box 8 SEP timing, catching the rollover-vs-conversion distinction, and flagging the mismatches the IRS matches on — with validation checks and worked examples built in.

→ jupid-tax/jupid-skills on GitHub — forms/form-5498/SKILL.md

For Claude Code: cp -r jupid-skills/forms/form-5498 ~/.claude/skills/. For the Anthropic SDK, load SKILL.md into the system prompt and the references/ files on demand. Review everything against your custodian's actual form before acting on it.

Clean Contribution Records, No May Surprises: How Jupid Helps

Form 5498 is a reconciliation problem, and reconciliation is easier when your records are already straight. Jupid keeps that ledger for you from a chat window: the AI accountant connects to your bank, categorizes transactions automatically at 95.9% accuracy, and answers in WhatsApp or iMessage, so the SEP deposit you made in March is logged, dated, and searchable when a form referencing it lands fourteen months later. Ask "how much did I put into my SEP for 2025?" in chat and get the figure from your real transaction history instead of digging through statements. The records that answer that question are the same ones that let you verify box 8 in seconds. Try Jupid.

Action Checklist

• When Form 5498 arrives in May, check box 1, box 8, or box 10 against your own contribution records
• Confirm box 7 shows the right account type (SEP vs traditional vs Roth)
• If you tracked nondeductible contributions, file the form with your Form 8606 basis records
• Note box 5 (year-end value) if you are near RMD age
• File it with the tax-year folder it belongs to; do not attach it to any return

Sources

• IRS — About Form 5498, IRA Contribution Information
• IRS — Instructions for Forms 1099-R and 5498 — box-by-box definitions and the May 31 furnishing rule
• IRS — COLA Increases for Dollar Limitations on Benefits and Contributions — 2026 IRA, SEP, and SIMPLE limits
• IRS — SEP Contribution Limits (including grandfathered SARSEPs) — 25% / $72,000 rule
• IRS — Retirement Topics: IRA Contribution Limits

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This guide is for general educational purposes and does not constitute tax, legal, or accounting advice. Contribution limits and reporting rules change year to year; verify current figures against irs.gov before you act. For advice specific to your situation, consult a qualified tax professional.