Introduction: Understanding Untaxed Portions of Pensions on Form 1040
You open Form 1040 looking for a line called "untaxed portion of pensions" and find nothing. That's normal. The form reports gross and taxable retirement distributions, while the FAFSA asks for the untaxed portion of IRA distributions and pensions, excluding rollovers.
The gap trips up a lot of families, and it gets harder for Australian-based US taxpayers whose retirement savings sit across two systems.
This article covers how the amount is derived, where to find the figures, how rollovers and after-tax contributions change the result, and why Australian residents with US filing obligations need extra care.
Key Takeaways
- The untaxed portion is generally the gross distribution minus the taxable amount, before removing rollovers.
- Form 1040 shows gross and taxable figures but has no "untaxed portion" label.
- A pension can be fully taxable, partly taxable, or not currently taxable.
- Never enter a full gross distribution without checking taxable amounts and rollovers.
What Does "Untaxed Portion" Mean?
Three terms matter here:
- Gross distribution: the amount paid out before tax or other deductions are withheld, not the net cash you received. It appears in Form 1099-R, box 1.
- Taxable amount: the part included in your income.
- Untaxed (nontaxable) portion: the difference between the two.
The FAFSA arithmetic is simple. Per the FSA Handbook, the IRA untaxed amount is line 4a minus 4b, and the pension amount is line 5a minus 5b. Those fields initially include any rollover component, which is excluded separately.
"Untaxed" doesn't mean tax-free forever. The amount may be after-tax basis you already paid tax on, a qualified rollover, or something else excluded from current taxable income. And tax-free for the IRS isn't automatically excluded for aid purposes.
The phrase belongs to financial-aid reporting. Form 1040 itself has no standalone category for it.
A Hypothetical Example
Suppose a pension paid a gross $20,000 in the year (line 5a), and $15,000 is taxable (line 5b). The untaxed portion is $5,000. If $2,000 of the gross was a qualified rollover, it is reported separately and excluded from the FAFSA figure.
This example uses round, made-up numbers for understanding only. It does not replace your Form 1099-R, basis records, or current IRS instructions.
How to Find and Calculate the Amount on Form 1040
Documents to Gather
- The Form 1040 for the correct tax year
- A Form 1099-R for each distribution
- Rollover confirmations
- Prior-year basis records, including Form 8606 for nondeductible IRA contributions
- Pension or annuity statements
Matching the Lines
IRA distributions sit on lines 4a (total) and 4b (taxable). Pensions and annuities sit on 5a and 5b. Verify the lines for your tax year, since layouts can change.
Don't assume 5a is fully taxable, or that 5b captures every issue. For fully taxable pensions, IRS instructions say to enter the payment on 5b and leave 5a blank, so both fields aren't always filled.
Reconciling With Form 1099-R
- Box 1: gross distribution, before withholding
- Box 2a: taxable amount. For traditional IRAs it often shows the full distribution, so you still need your basis.
- Box 4: federal tax withheld, which is separate from taxability
- Box 7: distribution code. Code G signals a direct rollover, but it doesn't alone prove the amount is nontaxable.
Calculation Checklist
- Start with the gross IRA or pension distribution.
- Identify the taxable amount under current IRS rules.
- Subtract taxable from gross.
- Remove any qualified rollover or other required exclusion.
- Keep records of after-tax contributions, basis, and rollover treatment.
How Pension and IRA Distributions Become Fully or Partly Taxable
Fully taxable. Per IRS Publication 575, payments are fully taxable when there is no cost in the contract. Salary contributed on a tax-deferred basis doesn't count as after-tax cost.
Partly taxable. If you have recoverable cost, part of each annuity payment is tax-free cost recovery. The Publication 575 example has Bill, age 65, with $31,000 of cost and a $1,200 monthly pension. The Simplified Method gives him a $100 monthly tax-free amount. Those are worked-example figures, not averages.
Tax treatment also varies by account or plan type:
- Traditional IRA: taxable except for nondeductible contributions tracked on Form 8606
- Roth IRA: qualified distributions are tax-free after the five-tax-year period and a qualifying condition such as age 59½
- Employer pension: depends on after-tax contributions and the plan type
- Annuity: Simplified Method for most qualified plans, General Rule for nonqualified plans
Penalties and withholding are separate issues. Most taxable early distributions before 59½ attract a 10% additional tax, reported on Form 5329. Neither that tax nor Form 1099-R box 4 withholding changes the gross-versus-taxable calculation.
How to Report the Untaxed Portion When Completing FAFSA
The FAFSA draws on tax records. It doesn't compute your federal tax liability.
Enter Untaxed Pension Amounts
- Find the IRA and pension totals and taxable amounts on the applicable Form 1040.
- Calculate the nontaxable difference using current FAFSA and IRS instructions.
- Exclude qualified rollovers where the instructions require it.
- Enter the result in the correct parent or student field, and don't duplicate it elsewhere.
Confirm the tax year too. The 2026-27 FAFSA uses 2024 tax data, and 2027-28 uses 2025.
Keep Items Separate
- Report retirement contributions on their own FAFSA line, not with pensions
- Pull tax-exempt interest from Form 1040 line 2a
- Treat child support received as an asset under the current formula
Documentation
Schools generally treat imported IRS data as verified, but they still request rollover confirmation. Acceptable evidence includes a signed statement, or a signed, dated notation on the return identifying the amount as a rollover. Keep:
- Form 1099-R copies
- Rollover paperwork
- Form 8606 and basis records
- Your filed return or transcript
Australian and Cross-Border Considerations
An Australian superannuation fund shouldn't be classified by its local label. US citizens and resident aliens may need a separate US classification and treaty review.
Australian tax-free status doesn't settle US taxation. The ATO shows no tax on taxed elements for recipients aged 60 or over, but that says nothing about US taxable income.
Key points go beyond a simple gross-minus-taxable split:
- Taxable amount: IRS guidance generally treats it as gross distribution minus cost in the contract.
- Treaty: the saving clause preserves US taxation of citizens and residents, and the treatment of Australian retirement distributions remains unsettled.
- Foreign tax: Form 1116 may give a credit, but it reduces US tax, not the pension's gross amount.
- Disclosure: FBAR applies above US$10,000 in aggregate foreign account balances; Form 8938 has separate thresholds. Both can apply even when a distribution is untaxed.
- FAFSA: foreign-only filers enter figures manually in US dollars; the FAFSA Handbook gives no super-specific rule.
Australian-based readers with US filing obligations, foreign pensions, or complex documentation can consider VJM Global's tax compliance and financial advisory support for a transparent review of their cross-border reporting position.
Frequently Asked Questions
What are untaxed portions of IRA distributions and pensions excluding rollovers?
It's the part of a reported IRA or pension distribution not included in taxable income, after applying basis and excluding qualifying rollovers under the FAFSA instructions.
Is a pension included in taxable income?
Often, but not always. Pension payments can be fully or partly taxable depending on pre-tax funding, after-tax contributions, basis, and the specific plan.
How do I calculate the untaxed portion of a pension distribution?
Subtract the taxable amount from the gross distribution. Then check for rollovers, after-tax basis, and current IRS and FAFSA instructions.
Where do pension and IRA distributions appear on Form 1040?
Lines 4a/4b cover IRAs and 5a/5b cover pensions and annuities, showing total and taxable amounts. Verify the line numbers for your tax year.
Are pension rollovers included in the untaxed portion reported on FAFSA?
Qualifying rollovers are generally treated separately from ordinary untaxed pension income. Check the current FAFSA wording and keep your rollover documentation.
How are Australian pensions or superannuation treated on a US tax return?
It depends on the plan's legal structure, your taxpayer status, contributions, distributions, and treaty provisions. The Australian label alone isn't enough.
