Build Your Cash Cushion
Before you invest a single dollar, you need a cash cushion (often called an emergency fund): cash you can access on short notice, enough to cover a job loss, a medical bill, or a major car repair without selling investments at a loss or going into debt.
This isn’t an investment. It’s insurance. The goal isn’t growth — it’s preventing a bad surprise from becoming a financial crisis.
Figure Out Your Number
Start by calculating your essential monthly expenses — the non-negotiable costs you’d still pay if you lost your income tomorrow:
- Housing (rent or home loan repayments, council rates, insurance)
- Food (groceries, not restaurants)
- Utilities (electricity, gas, water, internet, phone)
- Insurance (health, car)
- Transport (car loan, petrol, public transport)
- Minimum debt payments
- Healthcare (prescriptions, recurring costs)
Add these up. This is your monthly baseline — the minimum you need to survive. Leave out discretionary spending like dining out, entertainment, and shopping. You’d cut those in a real emergency.
How Many Months?
Not everyone needs the same cushion. Your target depends on how predictable your income is and how quickly you could replace it:
| Your situation | Target | Why |
|---|---|---|
| Dual income, both stable jobs | 3 months | Low probability both lose income at once |
| Single income, stable job | 6 months | Standard safety net |
| Variable income or freelance | 6-12 months | Income gaps are part of the model |
| Single earner with dependents | 6-12 months | More people depending on one income |
| Nearing retirement | 12+ months | Harder to replace income, more at stake |
Where to Keep It: The Tiered Approach
Don’t dump your entire cash cushion into a single account. Different parts of it serve different purposes, and structuring them in tiers lets you balance instant access against earning a reasonable return.
Tier 1: Everyday Account (1 month of expenses)
Keep roughly one month of essential expenses in your everyday (transaction) account as a buffer above your normal spending. This covers small surprises without needing to transfer anything.
- Access: Immediate
- Interest: usually little or none
- Purpose: Day-to-day buffer, small unexpected costs
Tier 2: Online or Bonus Saver (2-5 months)
The core of your cash cushion. Online and bonus savings accounts pay much more than an everyday account, but many only pay the bonus rate if you meet conditions, such as depositing every month or making no withdrawals. Introductory rates also end. Check the conditions and your statements.
- Access: Same day to 1-2 business days via transfer
- Interest: savings rates move with the central bank’s cash rate. Check the current RBA cash rate in Australia or the Official Cash Rate in New Zealand
- Purpose: Core cash cushion, accessible within days
Tier 3: Term Deposits (remaining months)
For the portion of your cushion you’re unlikely to need on short notice, a term deposit (Moneysmart, Sorted) locks money away for a fixed term at a fixed rate. Terms usually run from 1 month to 5 years. In New Zealand, Kiwi Bonds are a government-issued alternative for NZ residents: terms of 6 months to 4 years, from $1,000 (as at Oct 2026).
- Access: At the end of the term. Breaking a term deposit early can cost you a penalty or interest. If you do nothing at maturity, it may roll over at a lower rate.
- Interest: usually a little more than a savings account
- Purpose: Extended reserves, unlikely to tap first
Try It: Build Your Tiered Cushion
Cash Cushion Tiers
| Tier | Where | Months | Amount | Example rate (Oct 2026) |
|---|---|---|---|---|
| 1 | Everyday account | 1 | $4,500 | 0.00% |
| 2 | Online or bonus saver | 4 | $18,000 | 4.00% |
| 3 | Term deposits | 1 | $4,500 | 4.25% |
Total fund
$27,000
Blended rate (example)
3.38%
Annual interest
$911
Using $4,500/month essential expenses and 6 months of coverage:
| Tier | Amount | Where | Example rate (Oct 2026) |
|---|---|---|---|
| Tier 1 | $4,500 (1 month) | Everyday account | 0% |
| Tier 2 | $18,000 (4 months) | Online or bonus saver | 4.00% |
| Tier 3 | $4,500 (1 month) | Term deposits | 4.25% |
Blended rate: ~3.4% — earning roughly $911 a year instead of nothing if it all sat in an everyday account. The rates are examples only; check what banks are paying now.
The tiers are approximate. The exact split matters less than the principle: keep enough immediately accessible, and let the rest work slightly harder.
What Is (and Isn’t) an Emergency
This money is insurance, not a savings account for wants. Before you tap it, ask: is this unexpected, necessary, and urgent?
Emergencies:
- Job loss or significant income reduction
- Medical emergency or unexpected health costs
- Essential car or home repair (your hot water system dies in July)
- Emergency travel (family crisis)
Not emergencies:
- A holiday deal that’s “too good to pass up”
- A new phone because yours is slow
- Christmas gifts (these are predictable — budget for them)
- An investment opportunity (never borrow from your safety net to speculate)
After You Use It: The Replenishment Plan
If you dip into your cash cushion, pause non-essential financial goals and rebuild it before resuming aggressive investing or extra debt payoff.
- Keep making minimum debt payments, and keep your super or KiwiSaver contributions going
- Redirect other savings and investment contributions towards rebuilding it
- Once you’re back to your target, resume your normal plan
Don’t beat yourself up for using your cushion. That’s exactly what it’s there for. The only mistake is not refilling it.
This guide is for informational purposes only and is not financial advice. Read the full disclaimer.