How to work out your own defined benefit income cap position, step by step

We have a separate article explaining what the defined benefit income cap is and why, above it, more pension can mean more tax. This one is different, and more practical: it's for the person sitting at the kitchen table with a payment summary from their fund, trying to work out their own number.

Before we start, the single most useful thing in this article: the ATO publishes a free Defined benefit income cap tool, which "helps you work out if the defined benefit income cap applies to your superannuation income stream" and calculates both the assessable income amount to report in your tax return and the tax offset if you're eligible (Australian Taxation Office, https://www.ato.gov.au/calculators-and-tools/super-defined-benefit-income-cap-tool). To use it you'll need your PAYG payment summaries for each capped defined benefit income stream. A great many people work through this by hand when a government calculator would do it in five minutes. The steps below tell you what the tool is asking and why, so the answer means something when it comes out. This article is general information only, not personal tax advice.

Step 1 — Does the cap even apply to you?

Start here, because a good number of people worrying about this cap aren't subject to it at all.

The defined benefit income cap applies to defined benefit income streams — a lifetime pension paid from a defined benefit fund, most commonly an older public sector scheme (Commonwealth or state) or certain corporate schemes. It generally becomes relevant from age 60, and it can also apply to certain death benefit pensions.

If your retirement income comes from an account-based pension — the ordinary kind, where you have a balance that goes up and down — then this cap is not your issue. You're in transfer balance cap territory instead, which is an entirely different thing, and we'll come back to that.

Step 2 — Taxed element, or untaxed element? (This is the fork)

This is the most important step in the article, and it's the one people most often get wrong or skip entirely. Your answer here determines what happens above the cap.

A taxed-source pension comes from a fund that paid tax on contributions and earnings along the way; this is common in corporate schemes and some public sector ones. An untaxed-source pension comes from a scheme where that tax wasn't paid inside the fund and the tax arrives at the end instead — the position for many older Commonwealth and state public sector schemes. The two are treated differently above the cap, and not slightly differently: the mechanisms are genuinely distinct, as Step 5 sets out.

Where do you find out? Your PAYG payment summary or income statement from the fund. It's set out there. Don't guess, and don't rely on what a colleague told you about their scheme — the whole rest of the calculation hangs off this answer.

Step 3 — Find your annual defined benefit income

The figure you want is the gross annual pension paid from your defined benefit income stream for the financial year. Again, your fund's payment summary is the source of truth, not your bank statements.

One trap here catches people out regularly: if you receive more than one defined benefit pension, they generally count together against the single cap. The ATO's own tool asks for the payment summaries for each capped defined benefit income stream for exactly this reason (Australian Taxation Office, https://www.ato.gov.au/calculators-and-tools/super-defined-benefit-income-cap-tool). People routinely assess only the bigger pension and get a surprise. Add them up.

Step 4 — Compare to the cap and find the excess

The cap is a set annual dollar amount, and it is indexed — it moves. It is calculated as one-sixteenth of the general transfer balance cap, which is why the two move together. For the 2026–27 income year the defined benefit income cap is $131,250, up from $125,000 in 2025–26, because the general transfer balance cap was indexed from $2.0 million to $2.1 million on 1 July 2026 and $2.1 million divided by 16 is $131,250 (Australian Taxation Office, https://www.ato.gov.au/individuals-and-families/super-for-individuals-and-families/self-managed-super-funds-smsf/smsf-newsroom/general-transfer-balance-cap-indexation-on-1-july-2026; https://www.ato.gov.au/tax-rates-and-codes/schedule-13-tax-table-for-superannuation-income-streams/supporting-information).

That indexation matters more than it sounds. If you last checked your position during 2025–26 against a $125,000 cap, you now have $6,250 more headroom — and if you concluded you were just over, you may no longer be. Always work against the cap for the income year you're actually assessing, and confirm the current figure with the ATO, because it will change again.

Then it's simple arithmetic: your total annual defined benefit income, minus the cap for that year, equals your excess. If that comes out at zero or below, you're under the cap and there's nothing further to work out for the year. If it's a positive number, go to Step 5.

Step 5 — Apply the right consequence to the excess

Now Step 2 pays off, because the two sources diverge here.

If your defined benefit income is made up of a taxed element, a tax-free component, or both, then 50 per cent of the income above the cap is included in your assessable income — specifically, 50 per cent of your defined benefit income excluding any untaxed-element amounts that exceeds the cap — and taxed at your marginal rate (Australian Taxation Office, https://www.ato.gov.au/individuals-and-families/super-for-individuals-and-families/super/withdrawing-and-using-your-super/retirement-withdrawal-lump-sum-or-income-stream/transfer-balance-cap-capped-defined-benefit-income-streams).

If instead you have an untaxed element, the mechanism is a restriction on your tax offset rather than an addition to your income. The offset available on the untaxed element of a capped defined benefit income stream is limited to 10 per cent of the defined benefit income cap for the year — $13,125 for 2026–27 (up from $12,500 in 2025–26) — and your entitlement to that offset is reduced by 10 per cent of the excess where your income exceeds the cap, though it can't be reduced below zero (Australian Taxation Office, https://www.ato.gov.au/tax-rates-and-codes/schedule-13-tax-table-for-superannuation-income-streams/supporting-information). Because the offset limit tracks the cap, confirm the figure for the year you're assessing rather than carrying last year's forward.

The practical point of this step is to know which mechanism applies to you, so that when you use the ATO tool or talk to your accountant, you're looking at the right one.

Step 6 — The pro-rata rule (the first-year trap)

If your pension started or ceased part-way through the financial year — or you turned 60 mid-year — you generally don't get the benefit of the full-year cap. Where someone starts to receive defined benefit income part way through a financial year, the cap is pro-rated for the remaining part of that year by formula, rounded up to the nearest dollar (Australian Taxation Office, https://www.ato.gov.au/tax-rates-and-codes/schedule-13-tax-table-for-superannuation-income-streams/supporting-information).

This is the classic first-year shock: someone whose pension commenced in March mentally measures a few months of income against a full year's cap, concludes they're comfortably under, and finds out otherwise. If your circumstances changed during the year, check this one specifically — and note that the ATO tool handles the apportionment for you.

What do the worked examples show?

These two show the same cap producing very different mechanics. They are illustrative only, and not personal tax advice.

Consider Robert, 68, a retired corporate executive whose defined benefit pension is entirely from a taxed source and pays him $155,000 for the 2026–27 year. Against the current cap of $131,250 (FY2026-27) his excess is $23,750. Because his income is a taxed element, 50 per cent of that excess — $11,875 — is included in his assessable income and taxed at his marginal rate (Australian Taxation Office, https://www.ato.gov.au/individuals-and-families/super-for-individuals-and-families/super/withdrawing-and-using-your-super/retirement-withdrawal-lump-sum-or-income-stream/transfer-balance-cap-capped-defined-benefit-income-streams). On these facts it is generally rational for someone in Robert's position to treat that $11,875 as a known, plannable addition to taxable income rather than a surprise at lodgement — and to note that a year earlier, against the $125,000 cap (FY2025-26), the same pension would have produced a $30,000 excess and a $15,000 addition. The indexation moved his number without him doing anything.

Now consider Helen, 71, a retired state public servant with two pensions from an untaxed-source scheme — $96,000 from the main one and $44,000 from a smaller reversionary pension — totalling $140,000 for 2026–27. Her first trap is aggregation: assessing only the $96,000 pension would put her comfortably under, but the two count together against the single cap, so her excess is $8,750. Her second is that the taxed-source arithmetic doesn't apply to her at all — with an untaxed element, the consequence runs through her tax offset entitlement rather than by adding half the excess to her income (Australian Taxation Office, https://www.ato.gov.au/tax-rates-and-codes/schedule-13-tax-table-for-superannuation-income-streams/supporting-information). On these facts it is generally rational for someone in Helen's position to run both payment summaries through the ATO tool rather than calculate by hand, because the offset restriction is precisely what the tool is built to compute. The difference between Robert and Helen isn't how much pension they receive. It's which element it comes from.

What are the three things people confuse this with?

Genuinely, most of the error in this area is people applying the wrong system. Keep these separate. The first is the transfer balance cap — a different cap doing a different job, limiting how much you can move into the tax-free retirement phase; it's related here only in that the income cap is one-sixteenth of it, and being affected by one tells you little about the other. Our article on the transfer balance cap covers it.

The second is how Centrelink assesses your defined benefit pension. That is a completely separate system: the tax rules here have no bearing on your Age Pension assessment, which has its own treatment — see our articles on the notional treatment of defined benefit pensions for the Age Pension and on the Centrelink deductible amount. The third is notional taxed contributions, which is about the contributions caps in a defined benefit scheme, not income in retirement; our article on that explains it.

Three caps, two systems, one very confusing area. Working out which one you're actually in is half the battle.

What can you actually do about it — honestly, not much?

I'd rather be straight with you than pretend there's a clever manoeuvre here. With most defined benefit pensions you can't commute the pension, restructure it, or turn the tap down to sit under the cap. It pays what it pays.

So the value of doing this exercise isn't that it unlocks a strategy. It's that you know, which means you can plan the rest of your tax position and your cash flow around a known number rather than being ambushed at tax time. Two things are worth watching over the years: your pension indexes and the cap indexes, and they don't necessarily move at the same rate, so you can drift across the line — in either direction — without doing anything at all, as Robert's example shows. Our article on public sector pension indexation covers that side. And if you still have a pension-versus-lump-sum choice open to you, this is one of the inputs; our article on that decision goes through it.

Should you get it checked?

Two steps in this sequence — the taxed-versus-untaxed fork, and the pro-rata rule — are where the errors happen, and the dollars involved are usually material. Your fund can confirm which element your pension comes from and your annual income figure. The ATO's tool will then do the arithmetic and tell you what to report. Your accountant can confirm it against your wider tax position. Note the ATO's own caveat: the tool's results are based on the information you provide and the threshold available at the time, are an estimate, and should be used for guidance (Australian Taxation Office, https://www.ato.gov.au/calculators-and-tools/super-defined-benefit-income-cap-tool).

What should you do in short?

Work it in order: confirm the cap applies to you, find out from your payment summary whether your pension carries a taxed or untaxed element, total up every defined benefit pension you receive, compare the total to the cap for that income year — $131,250 in 2026–27, up from $125,000 in 2025–26 — apply the mechanism that matches your element, and pro-rata it if the year was a part-year. Then put the payment summaries through the ATO's free tool and check the result with your fund and your accountant. You probably can't change the answer. But knowing it, rather than discovering it, is the whole point.

Sources

• ATO — Defined benefit income cap tool
• ATO — Schedule 13 tax table for superannuation income streams: supporting information
• ATO — Transfer balance cap: capped defined benefit income streams
• ATO — General transfer balance cap indexation on 1 July 2026
• ATO — Transfer balance cap: key superannuation rates and thresholds