The transfer balance cap that matters for most retirees isn't the published general TBC ($2.1 million from 2026-27) but their personal TBC, which indexes proportionally based on the unused portion of their cap at their highest-ever usage. A member who used 100% of the cap at commencement gets no future indexation benefit; one who used 50% gets half of every subsequent increase.
The transfer balance cap (TBC) was introduced on 1 July 2017 as part of the major super reforms of that period, set initially at $1.6 million. It has indexed in $100,000 steps tied to CPI: $1.7 million from 2021–22, $1.9 million from 2023–24, $2.0 million from 2025–26, and $2.1 million from 2026–27. The published figure each year is the general TBC — the cap that applies to a member commencing their first pension that year.
For most discussions, the published figure is the headline. For most members not yet in pension phase, it is the relevant figure. But for members who have previously commenced a pension — that is, the cohort the cap is most often relevant for — the actual cap that applies is a personal transfer balance cap, which can be very different from the headline.
What is the fundamental distinction between general and personal TBC?
The fundamental distinction. The TBC tracks every member's lifetime cumulative use of the cap, recorded in their transfer balance account (TBA). When a member commences a pension, the value transferred is credited to the TBA. Subsequent commutations (transfers back to accumulation, or lump-sum payments) are debited. Investment earnings within pension phase do not affect the TBA — they grow the balance but are not credit events.
The personal TBC is updated for indexation proportionally. The proportion is based on the member's highest-ever cap usage at the time of indexation. The unused portion gets the indexation; the used portion does not.
How do two worked examples illustrate the rule?
Two examples make the rule clear.
Example A: maximum cap commencement. A member commenced a pension worth $1.6 million on 1 July 2017, when the general TBC was $1.6 million. The TBA at that point was $1.6 million — 100% of the cap was used. The unused portion was zero.
When the cap indexed to $1.7 million in 2021–22, the unused portion was zero, so the indexation provided no benefit. The personal TBC remained at $1.6 million. When the cap indexed further to $1.9 million in 2023–24, $2.0 million in 2025–26, and $2.1 million in 2026–27, the same logic applied each time. The member's personal TBC has been stuck at $1.6 million since commencement — and will stay there permanently, since 100% of the cap was used at the outset.
Example B: partial commencement. A different member commenced a pension worth $800,000 on 1 July 2017, when the general TBC was $1.6 million. The TBA at that point was $800,000 — 50% of the cap was used. The unused portion was 50%.
When the cap indexed to $1.7 million in 2021–22, the unused portion got 50% of the $100,000 indexation, or $50,000. The personal TBC became $1.65 million. Subsequent indexations applied the same proportional rule, with the calculation based on the highest-ever cap usage proportion: 50% of the $200,000 rise to $1.9 million in 2023–24 (+$100,000, personal TBC $1.75 million), 50% of the $100,000 rise to $2.0 million in 2025–26 (+$50,000, personal TBC $1.8 million), and 50% of the $100,000 rise to $2.1 million in 2026–27 (+$50,000, personal TBC now $1.85 million).
Why does this rule matter in practice?
Why the rule matters. Two members with identical $2.1 million super balances today, both wanting to commence a new pension, can have very different outcomes. The first member, with personal TBC of $1.6 million, can put only $1.6 million into pension phase — $500,000 must remain in accumulation, taxed at 15% on earnings. The second member, with personal TBC of $1.85 million, has more headroom — only $250,000 needs to stay in accumulation.
For high-balance retirees, the personal TBC is the cap that matters. The general TBC is essentially an upper bound for first-time commencers; for the rest, the personal cap is the figure that drives planning.
Should a member commence at the maximum or leave headroom?
The strategic question: maximum or headroom? A member commencing their first pension at a time when the general TBC is $2.1 million faces a choice. Commence at the full $2.1 million, locking the personal TBC at $2.1 million? Or commence at less — perhaps $1.6 million — leaving headroom for future indexation?
The trade-off:
Maximum commencement. Pros: the entire commenced amount is in tax-free pension phase. Earnings on the full $2.1 million are tax-free. Cons: the personal TBC is locked at $2.1 million; future indexation events provide no further benefit.
Headroom commencement. Pros: the unused portion preserves indexation benefit. As the general TBC indexes over the next 5–10–20 years, the member's personal TBC also rises, allowing more transfers to pension phase later. Cons: the headroom amount remains in accumulation, paying 15% earnings tax. Over a 10-year period, the foregone tax benefit can be substantial.
The decision depends on the member's expected horizon, expected market returns, expected indexation pace, and broader retirement plan. For most retirees in their late 60s or 70s, the tax benefit of pension phase outweighs the cap preservation benefit — maximum commencement is the right answer. For pre-retirees in their 50s with very long horizons, the calculation can swing toward headroom preservation. The analysis is member-specific.
What are the common misunderstandings?
Common misunderstandings.
"I can put $2.1 million into pension now because that's the cap." Only if you have not previously used your cap. A member who commenced any pension before now has a personal TBC determined by their indexation history. Always confirm before commencing.
"Each indexation increases my cap." Only the unused portion. Maximum-cap users get nothing from indexation.
"If I commute my pension back to accumulation, my cap resets." No. The TBA is debited, but the high-water-mark proportion is captured at the maximum point and persists. Subsequent commutations don't unwind the cap calculation.
"Earnings on my pension reduce my cap usage." No. Investment earnings within pension phase do not affect the TBA. Only specific events — commencement, commutation, excess corrections — move it.
What happens to a survivor's cap on a death benefit pension?
Death benefit pensions and the survivor's cap. A particularly consequential scenario for couples. When a member dies and their pension passes to the surviving spouse — either by reversion or as a non-reversionary death benefit pension — the value passing to the survivor counts toward the survivor's personal TBC.
For a surviving spouse with their own existing pension already at or near their personal TBC, the death benefit pension can push them over. The excess must be commuted back to accumulation to remediate.
For reversionary pensions, a 12-month grace period applies before the credit appears in the survivor's TBA. This provides time to manage the position. For non-reversionary death benefit pensions, the credit is immediate. Couples planning around the survivor's TBC should default to reversion where possible.
What does the pre-commencement checklist look like?
The practical pre-commencement checklist. Before any pension commencement decision:
- Confirm the member's current personal TBC via the ATO (myGov, or direct ATO request).
- Project the cap impact of the proposed commencement.
- For very high balances and long horizons, model maximum vs headroom strategies.
- For couples, plan the survivor scenario — the survivor's personal TBC matters as much as the original member's.
- Document the analysis. The personal TBC at the time of commencement should be in the file.
The wider point. The transfer balance cap is one of the most consequential post-2017 super features for high-balance retirees, and the proportional indexation rule is one of its more technical aspects. The rule rewards the member who left headroom early and penalises the member who maximised pension phase at first opportunity. For most retirees, the analysis converges on a clear answer; for some, the choice is genuinely close. Either way, knowing the rule — and confirming the personal cap before any transaction — is the precondition for the planning conversation.
Sources
- ATO — Transfer balance cap (key super rates and thresholds)
- ATO — Calculating your personal transfer balance cap
- ATO — General transfer balance cap indexation on 1 July 2026
- ATO — Transfer balance account (credits and debits)
- ATO — Superannuation death benefits
Key takeaways
- The general TBC ($2.1 million from 2026-27) only applies in full to a member commencing their very first pension — anyone who has previously commenced a pension has their own personal TBC instead.
- The personal TBC indexes proportionally: only the unused portion of the cap at a member's highest-ever usage benefits from each future indexation increase.
- A member who used 100% of the cap at first commencement gets zero benefit from every subsequent indexation and stays locked at their original cap forever.
- A member who used 50% of the cap at first commencement gets 50% of every future indexation rise — that proportion is fixed permanently once the highest-ever usage is set.
- For couples, a death benefit pension passing to a surviving spouse counts toward the survivor's own personal TBC — reversionary pensions get a 12-month grace period before the credit applies, non-reversionary pensions don't.
Frequently asked questions
What is the difference between the general TBC and a personal TBC?
The general TBC ($2.1 million from 2026-27) is the published headline figure that applies to a member commencing their very first pension. Anyone who has previously commenced a pension instead has a personal TBC, which reflects their own indexation history and can be significantly lower than the current general cap.
How does proportional indexation of the personal TBC work?
Each time the general TBC indexes, only the unused portion of a member's personal cap — based on their highest-ever percentage of cap usage — benefits from the increase. A member who has never used any of their cap gets the full indexation; a member who used 100% at their highest point gets none.
Does commuting a pension back to accumulation reset the personal TBC?
No. The transfer balance account is debited by the commutation, but the high-water-mark usage proportion that determines future indexation is captured at the member's highest-ever balance and persists — subsequent commutations don't undo that calculation.
Should a retiree commence their pension at the maximum amount or leave headroom?
It depends on their horizon. Commencing at the maximum locks in full tax-free treatment on the whole amount now but forfeits future indexation benefit. Leaving headroom preserves future indexation growth in the personal cap but means the unused amount stays in accumulation, paying 15% tax on earnings in the meantime — for most retirees in their late 60s and 70s, maximum commencement is usually the better trade-off.