Fixed-interest assets — term deposits, government bonds, bond ETFs — form the defensive layer of a retiree portfolio, targeting 20–40% for balanced profiles. Term deposits offer capital security and government guarantee up to $250,000 per ADI. Bond ETFs provide diversified, liquid fixed-interest exposure. For Centrelink purposes, all financial assets (including fixed-interest holdings) are subject to deeming — actual interest received does not override the deemed figure.
For retirees building or managing a long-term investment portfolio, fixed interest occupies a specific and necessary role. It is the defensive layer — the portion of the portfolio that reduces overall volatility, provides predictable income, and protects against the risk that makes retirement portfolios different from accumulation portfolios: having to draw on investments in the short term, regardless of where markets happen to be. Most advisers target a 20 to 40 per cent allocation to fixed interest for balanced retiree portfolios, with the exact proportion depending on risk profile, age, income needs, and the presence of other income sources like the Age Pension or defined benefit pensions.
The term "fixed interest" covers several distinct products with meaningfully different characteristics. Term deposits are the most familiar — bank-issued instruments for a specified term (typically three, six, twelve, or twenty-four months) at a fixed interest rate, with the deposit secured and government-guaranteed up to $250,000 per account holder per authorised deposit-taking institution (ADI) under the Australian Government's Financial Claims Scheme (APRA, https://www.apra.gov.au/about-financial-claims-scheme). Government bonds are direct obligations of the Australian Treasury — effectively risk-free, with fixed coupon payments and return of principal at maturity. Treasury Indexed Bonds (TIBs) are a specialised variant where both coupon and principal adjust for CPI, providing direct inflation protection. Corporate bonds are debt securities issued by companies, typically offering higher yields than government bonds in exchange for credit risk — the risk the issuer cannot meet its obligations. Bond ETFs — exchange-traded funds that hold diversified portfolios of bonds — provide broad bond market exposure with daily liquidity and without the minimum lot sizes of direct bond purchases.
Term deposits suit retirees who value simplicity and capital security. The trade-off is liquidity — funds are locked for the term, with break-cost penalties if early access is required — and re-investment risk, meaning that when the deposit matures, the prevailing rate may be higher or lower than the locked rate. Inflation risk is also present: if inflation exceeds the deposit rate, the real purchasing power of the capital declines over the term. The government guarantee (up to $250,000 per account holder per ADI) means that deposits held with Australian-incorporated banks, building societies, and credit unions are protected in the event of institutional failure. This limit applies per institution, not per account — so $250,000 across multiple accounts at the same bank is still one protection, not several.
Government bonds add diversification beyond term deposits for larger portfolios. They are traded on the ASX and also available directly through the Australian Office of Financial Management (AOFM). TIBs deserve specific mention for inflation-conscious retirees: because both coupon and principal adjust upward with CPI, they provide a real (inflation-adjusted) return — a different risk profile from nominal fixed-rate instruments. For portfolios with substantial fixed-interest allocations, some exposure to TIBs as an inflation hedge is a recognised strategy.
Bond ETFs are increasingly the modern approach to fixed-interest diversification. Products such as VAF (Vanguard Australian Fixed Interest Index ETF, https://www.vanguard.com.au/personal/invest-with-us/etf?portId=8207), VGB (Vanguard Australian Government Bond Index ETF, https://www.vanguard.com.au/personal/invest-with-us/etf?portId=8208), and IAF (iShares Core Composite Bond ETF, https://www.blackrock.com/au/products/251977/ishares-core-composite-bond-etf) provide diversified exposure — across dozens or hundreds of bonds, maturities, and issuers — in a single listed product with the liquidity of a share. Because a bond ETF holds many bonds simultaneously, a single issuer default has much less impact than it would in a direct bond holding. The trade-off relative to direct bonds is that a bond ETF never "matures" — it perpetually holds a mix of bonds at various stages — meaning capital values fluctuate more visibly with interest rate movements than a term deposit or direct bond held to maturity.
Tax and Centrelink treatment differ meaningfully depending on where fixed-interest assets are held. In pension-phase superannuation, earnings including interest are taxed at zero per cent — making fixed-interest assets particularly tax-effective in that environment. Held in personal name, interest income is assessable at the individual's marginal tax rate, though the Seniors and Pensioners Tax Offset (SAPTO) may reduce or eliminate this liability for eligible retirees. For the Centrelink income test, term deposits and bonds are treated as financial assets — deemed income applies (calculated on the total financial assets balance at the current deeming rates set by Services Australia) rather than actual interest received. If actual interest is higher than deemed income, the extra is not additionally assessed; the deemed figure applies either way.
Three practical strategies are worth understanding. Cash-bucket management places one to three years of expected spending needs in term deposits or high-interest savings accounts — ensuring market downturns do not force selling of growth assets to fund living costs. Income laddering establishes multiple term deposits at staggered maturities — for example, deposits maturing at twelve, twenty-four, thirty-six, and forty-eight months — producing regular liquidity and averaging re-investment risk across time rather than concentrating it at a single maturity point. Portfolio allocation uses fixed interest to reduce overall volatility: a portfolio with 30 per cent in bonds and bond ETFs alongside 60 per cent in growth assets behaves meaningfully differently during a sharp market downturn compared with an unhedged growth-heavy portfolio.
Not all fixed-interest products carry the same risk profile, and "defensive" can create a false sense of safety. Bond ETF prices fall when interest rates rise. Corporate bonds carry credit risk. Inflation erodes the real return of nominal fixed-rate instruments over time. Currency risk applies to unhedged international bond funds. Understanding which risks a given product does and does not protect against is fundamental to building a fixed-interest allocation that actually behaves as intended under the conditions that matter.
Sources
- APRA — About financial claims scheme
- vanguard.com.au
- vanguard.com.au
- blackrock.com — Ishares core composite bond etf
Key takeaways
- Fixed interest (term deposits, government bonds, bond ETFs) provides the defensive layer of a retiree portfolio, typically targeting 20–40% of the total allocation depending on risk profile and other income sources.
- Term deposits are government-guaranteed up to $250,000 per account holder per authorised deposit-taking institution (ADI) — this limit applies per institution, not per account.
- For Centrelink income test purposes, term deposits and bonds are assessed under deeming — actual interest received does not affect the assessed income figure either up or down.
- Bond ETF prices fall when interest rates rise; the defensive label should not imply immunity from capital movements for retirees who may need to sell before maturity.
- Income laddering — holding term deposits at staggered maturities — averages re-investment risk over time rather than concentrating it at a single maturity point.
Frequently asked questions
Is my term deposit safe if the bank fails?
Term deposits held with Australian authorised deposit-taking institutions (banks, building societies, credit unions) are protected under the Australian Government's Financial Claims Scheme, administered by APRA. The protection covers up to $250,000 per account holder per ADI. This limit applies per institution — holding multiple accounts at the same bank does not multiply the guarantee; you are still covered up to $250,000 across all accounts at that one institution.
Are term deposits and bonds subject to Centrelink deeming?
Yes. Term deposits, government bonds, corporate bonds, and bond ETFs are all classified as financial assets for Centrelink income test purposes. Deemed income is calculated on the total financial asset balance at the current deeming rates set by Services Australia. Actual interest received does not replace this figure — if actual interest is higher than deemed income, the extra is not additionally assessed; deeming applies either way.
What are the main fixed-interest options for a retiree portfolio?
The main options are term deposits (capital security, government guarantee, fixed rate, locked until maturity), government bonds (ASX-traded or direct via AOFM, including inflation-linked Treasury Indexed Bonds), corporate bonds (higher yield, credit risk), and bond ETFs (diversified, daily liquidity, no fixed maturity). Bond ETFs are increasingly the modern approach for most retirees — products like VAF, VGB, and IAF provide broad exposure in a single listed security.
What is income laddering with term deposits?
Income laddering means holding multiple term deposits at staggered maturities — for example, deposits expiring at 12, 24, 36, and 48 months. As each deposit matures, the funds can be reinvested at prevailing rates, spent, or rebalanced. This approach averages reinvestment risk across time rather than concentrating it at a single maturity date, and ensures regular liquidity without breaking any one deposit early.