Getting the right mix of shares and cash in your investment portfolio is one of the most important decisions you’ll make as an Australian investor. This forms part of a broader approach to investing, as outlined in our guide on How to Invest Your Money in Today’s Market. Too much cash can erode wealth through inflation, while too little may require selling investments at the wrong time. This guide provides practical frameworks to help determine the appropriate balance.
Quick answer: a practical starting point for most Australians
Before diving into theory, here are rule-of-thumb ranges for your asset allocation:
Emergency fund (held separately): 3–6 months worth of living expenses in high-interest savings accounts or offset accounts.
For invested money beyond emergencies:
Age 20–35, long horizon: 5–10% cash, 90–95% shares
Age 35–50, building wealth: 10–20% cash, 80–90% shares
Age 50–65, approaching retirement: 20–30% cash, 70–80% shares
Retirees drawing income: 25–40% cash and defensive assets, 60–75% shares
These are starting points only – these ranges align with broader guidance on how asset allocation typically changes across different life stages. Adjust for your financial goals, debts, and risk tolerance. This article focuses on ASX shares, term deposits, and high-interest savings as concrete examples for Australians in 2026.
Shares vs cash: what each is really for
The shares vs cash question is really about safety and flexibility versus long term gains.
Cash includes: at-call savings accounts, bonus savers, cash held in offset accounts, and short term deposits (3–12 months).
Shares include: direct ASX holdings (BHP, CBA, CSL) and ETFs tracking indexes like the S&P/ASX 200.
Cash serves three main roles:
Liquidity for short term needs under 2 years
Buffer against job loss or unexpected expenses
Dry powder to invest when markets fall
Shares drive long-term growth, with historical returns around 8–9% per annum versus cash at 3–4%. The ASX 200 offers dividend yields around 4% before franking credits, making growth assets an integral part of retirement savings inside and outside super. This is particularly relevant when understanding how investing in shares works in practice.
Step 1: separate emergency cash from investment cash
Your first decision isn’t “shares vs cash”—it’s “how big should my emergency fund be?”
An emergency fund covers:
Job loss or reduced hours
Medical or dental bills
Urgent home or car repairs
Unexpected family travel
Guidelines:
Most households: 3–6 months of essential expenses
Self-employed or single-income families: 6–12 months
Homeowners: consider using an offset account
Example: A Sydney household spending $5,000 per month on essentials should target $15,000–$30,000 in emergency cash. This money set aside stays in cash regardless of market conditions—it’s not part of your investment timeline.
Step 2: decide your shares vs cash mix for investments
With your emergency fund sorted, now focus on money available for investing.
Historically, Australian shares have delivered higher returns than cash investments over decades, but with greater volatility. Your investment horizon determines your mix and forms part of building a structured investment portfolio aligned with your goals and timeframes.
Money needed in under 2 years: 100% cash or term deposits
Money needed in 2–7 years: 40–70% shares, 30–60% cash
Money needed in 7+ years: 70–95% shares, 5–30% cash
Example: A household with $100,000 to invest (after emergencies) might allocate:
$10,000–$15,000 in portfolio cash for near term opportunities
$85,000–$90,000 in diversified ASX ETFs for long-term growth
Remember that superannuation settings affect your overall asset classes exposure. If your super is in a growth option (85% equities), you might prefer slightly more cash outside super for security.
How much cash to hold inside your portfolio?
Portfolio cash is different from your day-to-day transaction accounts and emergency funds. Many investors use a 2–20% cash range within their invested portfolio.
Typical examples:
Growth-focused investor in their 30s: 5% cash, 95% shares
Balanced investor in their 40s: 10–15% cash, 85–90% shares
Cautious investor nearing retirement: 20–30% cash, 70–80% shares
Higher portfolio cash makes sense when:
Expecting large expenses within 1–3 years (school fees, home deposit)
Needing “sleep at night” money during volatility
Dollar-cost averaging into the market over 6–18 months
Too much cash becomes a risk when:
Sitting on 50–80% cash for years during peak wealth-building decades
Holding cash in low-interest transaction accounts instead of higher-rate options
Review your allocation at least annually or after major life events.
Pros and cons of shares vs cash
Pros of cash:
Certainty of nominal value—$10,000 stays $10,000
Immediate access in at-call accounts
Useful when markets fall; you won’t sell shares at a loss
Cons of cash:
Inflation risk: 3% inflation reduces $10,000 to about $7,400 purchasing power over 10 years
Lower returns versus equities and property in the long run
Temptation to “wait for the perfect time” creates opportunity cost
Pros of shares:
Higher long-term growth potential based on past performance
Dividends from banks like NAB or Telstra provide income and franking credits
Businesses can raise prices with inflation, helping preserve capital
Cons of shares:
Volatility—portfolios can fall 20–30% in downturns like the global financial crisis or March 2020
Emotional pressure leads to buying high and selling low
Company-specific risks without diversification across different asset classes
The goal isn’t picking a winner. It’s combining shares and cash to support your real-world goals.
Common mistakes when choosing between shares and cash
Avoid these costly errors:
Mixing emergency savings with investment cash—depleting your buffer when markets fall
Going 100% cash after a crash—missing recoveries like the 50% ASX rebound after March 2020
Holding cash in the portfolio—then being forced to sell shares at a loss for unexpected bills
Chasing interest rate headlines—moving everything to term deposits when rates spike temporarily
Market timing instead of time in market—waiting for the “perfect entry” while money sits idle
Many of these behaviours reflect broader patterns seen in common investment mistakes investors make over time. During 2022–2023, higher risk-free rates made savings accounts attractive. But even Warren Buffett acknowledges that staying fully in cash for 5+ years typically delivers lower returns than a diversified share portfolio. Having a written target range (e.g., “10–15% cash”) reduces emotional decisions.
How Money Path can help you find the right balance
Money Path helps Australians build practical, personalised roadmaps for their money. We can assist by:
Clarifying your long term goals and mapping how much should be in shares versus cash for each timeframe
Modelling scenarios comparing different mixes and their impact on future performance
Setting up separate buckets for emergencies, short-term needs, and long-term investing
Providing ongoing check-ins as circumstances change
We focus on education and structure—not speculation or stock-picking. Book a session to clarify your own ideal allocation.
FAQs: shares vs cash
Is there a perfect percentage of shares vs cash for everyone? No universal number exists. Younger investors with long horizons suit 90%+ shares, while retirees may need 30–40% cash. Personal circumstances matter most.
Should I invest a lump sum or drip-feed from cash? Historically, lump-sum investing wins about 68% of the time. However, dollar-cost averaging can feel more comfortable and reduce regret if markets fall shortly after investing.
What if I’m very risk-averse—can I stay mostly in cash? You can, but understand the cost. At 4% returns versus 7% in shares, $100,000 over 20 years generates significantly less wealth. Inflation erodes purchasing power regardless.
How often should I rebalance? Check annually or after big market moves. If shares grow from 80% to 90% of your portfolio, consider selling some to restore your target.
Where should I keep my cash—savings account or term deposit? At-call savings for emergencies and near-term funds. Term deposits work for money you won’t need for a fixed period, often offering 0.5–1% higher interest.
Write down your top questions and use tools like Money Path to answer them before making allocation changes.
