Forms and paperwork are where things often get confusing. Here’s a clear, step-by-step rundown of what forms you (and your tax agent) should complete when you move to Australia and have a US pension paid to you here, and how each payment is taxed.
Key point: under Article 18(2) of the Australia–US tax treaty, US Social Security paid to an Australian resident is taxable only in the US. The ATO treats it as not assessable in Australia, so it doesn't go on your Australian tax return. Other US pensions and annuities (such as an employer pension) are generally taxable in Australia under Article 18(1).
What You'll Learn
- Forms & Tax Compliance
- Quick Checklist of Forms
Forms & Tax Compliance
1. US Side: Withholding Tax and Residency
- US Social Security
- How it's taxed: Taxable only in the US under the treaty. If you're not a US citizen, the SSA generally withholds nonresident alien tax of 25.5% of each payment (30% of 85% of the benefit), and the Australia–US treaty doesn't reduce this. US citizens living in Australia don't have this tax withheld; they report their benefits on their US tax return instead.
- IRS Form W-8BEN
- Purpose: Certifies you are a non-US person living in Australia and claims benefits under the US–Australia tax treaty.When to Use: Give it to the payer of a US private pension, annuity or retirement plan (not the Social Security Administration) so payments can be made with reduced or no US withholding under the treaty. US citizens can't use this form.Key Details: Fill in your Australian address, your tax identification numbers, and the treaty claim in Part II.
- SSA-21 (Supplement to Claim of Person Outside the US)
- Purpose: Notifies the Social Security Administration (SSA) that you live outside the US.When to Use: If you’re receiving US Social Security and moving to Australia, submit this to SSA to update your residency status. The SSA can pay your benefit by international direct deposit into an Australian bank account.
2. Australian Side: Declaring Income
- US Social Security: usually not declared
- Why: Because it's taxable only in the US, the ATO treats US Social Security received by an Australian resident as not assessable income. It isn't shown on your Australian tax return, and you can't claim a foreign income tax offset for the US tax withheld from it. It can still count as exempt income if you have carried-forward tax losses.
- **Australian Tax Return** (Individual Tax Return)
- Section: Item 20 “Foreign source income and foreign assets or property” in the supplementary section.What to Declare: Other US pensions and annuities that are taxable in Australia, at the gross (pre-tax) amount, converted to AUD using the exchange rate at the time you receive each payment or an average rate for the year.Supporting Documents: Keep your US pension statements and evidence of any US tax withheld. You don't attach them to your return, but the ATO can ask for them.
- Foreign Income Tax Offset (claimed in your return)
- Purpose: Claim a credit for US tax paid on income that's also taxed in Australia, so you're not taxed twice.How to Claim: There's no separate schedule; you enter the offset at item 20. If your offset is $1,000 or less, you simply claim the US tax paid (in AUD). Above $1,000, you need to work out your offset limit using the ATO's Guide to foreign income tax offset rules.
- US IRA and 401(k) withdrawals
- Lump-sum withdrawals or transfers from US retirement accounts can be treated differently from regular pension payments in Australia, and US citizens remain taxable in the US on them. Get advice before you withdraw or transfer.
- Bank Statement (for Currency Conversion Evidence)
- Purpose: Support your reporting of the pension amount in AUD.Tip: Retain these for your records—you don’t submit them unless the ATO requests.
3. If You Receive the Australian Age Pension
- Tell Services Australia about your US pension
- Purpose: US Social Security and other foreign pensions generally count as income under the Age Pension income test, assessed on the gross amount before US tax and converted to AUD.Details: Report the amount, frequency and currency through your Centrelink online account or the Income and assets form (SA369).
- The Australia–US social security agreement
- If you claim the Age Pension, you may be required to take reasonable steps to claim any US pension you're entitled to. The agreement can also let your periods of US social security coverage count towards the Age Pension residence requirement, though a minimum period of Australian residence still applies.



