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How to Build a Diversified ETF Portfolio in Australia

By Roopon Finance Team7 min read

Why ETFs Work for Australian Investors

Exchange-traded funds have transformed retail investing in Australia. The core advantage is broad diversification at rock-bottom cost - something previously only accessible to institutional investors:

  • What an ETF is: A fund that holds a basket of assets (shares, bonds, property) and trades on the ASX like a share - you buy and sell units throughout the trading day at market price
  • CHESS vs custodian: ASX-listed ETFs like VAS, DHHF, and VGS are CHESS-sponsored - you receive a HIN (Holder Identification Number) and directly own your units; you are NOT exposed to broker insolvency risk
  • Management expense ratios: The recurring cost of owning an ETF - expressed as a percentage per year: VAS (Vanguard Australian Shares) 0.07%, VGS (Vanguard Global Shares) 0.18%, DHHF (BetaShares Diversified All Growth) 0.19%, VDHG (Vanguard Diversified High Growth) 0.27%
  • Distributions: Most ASX ETFs pay quarterly distributions of income (dividends and interest); you receive a tax statement annually showing the breakdown of ordinary income, franking credits, capital gains, and foreign income
  • Franking credits: Australian share ETFs pass through franking credits from underlying companies - for tax residents in lower brackets these can result in refunds; for those in the top bracket they reduce the effective tax on distributions
  • DRP (Distribution Reinvestment Plan): Many ETFs offer automatic reinvestment of distributions - each DRP reinvestment creates a separate cost base lot, which requires careful tracking for CGT purposes (Sharesight automates this)

The One-Fund Solution: DHHF vs VDHG

For investors who want maximum simplicity, all-in-one diversified ETFs hold everything within a single ticker. The two most popular on the ASX are DHHF and VDHG:

  • DHHF (BetaShares Diversified All Growth ETF): 100% growth assets - approximately 37% Australian shares, 40% global shares (hedged and unhedged), 10% emerging markets, 13% small caps; MER 0.19%; no bonds
  • VDHG (Vanguard Diversified High Growth Index ETF): Approximately 90% growth / 10% bonds; MER 0.27%; slightly more conservative allocation; also includes Australian and international shares
  • The bonds debate: VDHG's 10% bond allocation provides modest volatility reduction but meaningfully drags long-run returns; for investors with a 20+ year horizon, many financial commentators prefer DHHF's 100% growth stance
  • Tax efficiency difference: DHHF is structured as a single ETF of ETFs using underlying ETF units; VDHG holds underlying fund units - historically VDHG has distributed more capital gains annually, making DHHF slightly more tax-efficient outside super
  • Underlying currency hedging: Both funds hold a mix of hedged and unhedged international exposure - DHHF's international component is partly hedged against AUD movements, reducing short-term currency volatility at some cost
  • When one-fund works best: Investors starting out, those with small portfolios where rebalancing brokerage exceeds the benefit, those who find multi-ETF management too complex to sustain long-term
  • The MER difference: On $100,000 invested, VDHG costs $270/year vs DHHF's $190/year - $80 difference; meaningful at $1M ($800/year) but not the deciding factor

The Core-Satellite Approach for Larger Portfolios

Once a portfolio reaches $50,000-$100,000+, building a multi-ETF core-satellite structure can reduce costs and increase control over tax outcomes:

  • Core (70-80% of portfolio): Broad market ETFs that provide the foundation - VAS (Australian shares, MER 0.07%), VGS (global developed markets ex-Australia, MER 0.18%), VGE (emerging markets, MER 0.48%)
  • Typical core allocation: 30-35% VAS, 45-50% VGS, 10-15% VGE - replicates roughly what DHHF holds at a blended MER of around 0.14% (cheaper than DHHF)
  • Satellite (20-30% of portfolio): Higher-conviction tilts - VISM (global small caps), VAP (Australian listed property, MER 0.23%), VHY (high yield Australian shares, MER 0.25%), sovereign bonds (VAF 0.10%), or thematic ETFs
  • Factor tilts: Academic research (Fama-French) supports small-cap (VISM) and value tilts delivering excess returns over time - VISM MER 0.32%; considered a portfolio enhancer not a replacement for core
  • Bond allocation: Generally unnecessary before age 50 for growth-focused investors; inside super, bonds provide useful ballast; VAF (Australian Fixed Interest, MER 0.10%) or VGB (Government bonds, MER 0.20%)
  • International hedging decision: VGS is unhedged (you benefit/lose from AUD movements); VGAD is fully hedged (removes currency risk, slightly higher MER 0.21%); most long-term investors favour unhedged as currency provides natural diversification
  • Brokerage consideration: With CommSec Pocket (minimum $50/trade, brokerage $2), SelfWealth ($9.50 flat), or Interactive Brokers (0.08% min $6), multi-ETF portfolios need sufficient regular investment amounts to make split purchases worthwhile

Rebalancing: Strategy and Tax Implications

Rebalancing returns your portfolio to its target allocation. Done poorly, it creates unnecessary CGT; done well, it maintains your risk profile without triggering tax:

  • Why rebalancing matters: Without rebalancing, strong-performing assets grow to dominate your portfolio - a 30% Australian shares allocation can drift to 45% after a bull run, increasing concentration risk
  • Rebalancing triggers: Calendar (annual/semi-annual review) or threshold (rebalance when any asset drifts more than 5% from target) - threshold-based is more responsive but requires more monitoring
  • Tax-efficient rebalancing - accumulation phase: Direct new contributions to underweight assets rather than selling overweight ones - avoids creating CGT events entirely
  • Tax-efficient rebalancing - when selling is needed: Prioritise selling assets held 12+ months to access the 50% CGT discount; consider selling within the same financial year as capital losses to offset gains
  • Tax lot selection: When selling partial holdings, select the specific lots to sell - choose the highest-cost parcels first (reduces the gain) or parcels held over 12 months (access the discount); Sharesight and most modern brokers support parcel-level selection
  • Wash-sale caution: Australian tax law does not have a formal wash-sale rule (unlike the US), but the ATO has indicated it may apply Part IVA general anti-avoidance to artificial arrangements - selling VAS and immediately buying IOZ (both Australian share index ETFs) to crystallise a loss while maintaining exposure is a moderate risk; waiting 30 days between sell and repurchase significantly reduces this risk
  • Inside super vs outside: Rebalancing inside super triggers 15% CGT (with discount it becomes 10%); rebalancing outside super at 37% marginal rate (discount: 18.5%) - holding growth assets outside super and defensive inside can reduce lifetime tax

Dollar-Cost Averaging and the Investment Plan

Regular investing regardless of market conditions - dollar-cost averaging (DCA) - removes the emotional decision of 'when to invest' and produces a lower average cost over time in volatile markets:

  • DCA mechanics: Invest $X every month/fortnight regardless of price - you buy more units when prices are low and fewer when prices are high; average cost per unit is lower than the average price over the period
  • Lump sum vs DCA: On average, lump sum investing outperforms DCA because markets trend upward - but DCA reduces maximum regret (the pain of investing everything at a peak) and is more realistic for wage earners
  • Brokerage minimisation: With $9.50 brokerage, investing $1,000/month in a single ETF costs 0.95% per trade - this drag is significant; either batch contributions quarterly ($3,000 reduces brokerage to 0.32%) or use a brokerage-free platform for small amounts
  • Automate where possible: Set up a regular BPAY or direct debit to your brokerage cash account on paydays - removes the decision point and treats investing as a non-negotiable bill
  • SPIVA report: S&P's semi-annual SPIVA Australia Scorecard consistently shows 80-90% of active Australian fund managers underperform their benchmark index over 10 years - the core case for passive ETF investing
  • The 10-year compounding example: $500/month into a balanced ETF portfolio averaging 8% per year = $91,000 after 10 years; $220,000 after 20 years; $455,000 after 30 years (contributions of $60k/$120k/$180k)

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