Term deposit laddering is a strategy where you split your savings across multiple term deposits with staggered maturity dates, so you always have money maturing soon while still earning competitive rates. It's one of the simplest and most effective strategies for getting the best of both worlds: high interest and regular access to your cash.
The Problem With a Single Term Deposit
Imagine you have $50,000 in savings and put it all into a 12-month term deposit at 4.80% p.a. You'll earn roughly $2,400 in interest over the year. Great. But what if you need $15,000 in month six for an unexpected expense? You have two options:
- Break the deposit early and pay a penalty (typically a reduced rate or total interest forfeiture)
- Borrow the money elsewhere, potentially at a higher rate than you're earning
Neither option is ideal. This is the core weakness of a single term deposit: you sacrifice all liquidity for a fixed return.
How Laddering Solves This
Instead of one $50,000 deposit, you create five $10,000 deposits with staggered terms:
| Rung | Amount | Term | Matures |
|---|---|---|---|
| 1 | $10,000 | 3 months | Month 3 |
| 2 | $10,000 | 6 months | Month 6 |
| 3 | $10,000 | 9 months | Month 9 |
| 4 | $10,000 | 12 months | Month 12 |
| 5 | $10,000 | 15 months | Month 15 |
Every three months, one rung matures. At that point, you can either:
- Withdraw the $10,000 + interest if you need it
- Reinvest into a new 15-month term at the current rate
After the first full cycle (15 months), every maturing deposit gets rolled into a new 15-month term. You now have a rolling ladder where one $10,000 deposit matures every three months, but each deposit is earning a 15-month rate (which is typically higher than a 3-month rate).
Step-by-Step: Building Your Ladder
Step 1: Decide your total investment
Work out how much you can lock away. Keep an emergency buffer (3-6 months expenses) in a savings account. Only ladder the surplus.
Step 2: Choose the number of rungs
More rungs means more frequent liquidity but more accounts to manage. Common setups:
- 3 rungs: Matures every 4 months
- 5 rungs: Matures every 3 months (most popular)
- 12 rungs: Monthly maturities (for larger balances)
Step 3: Select your terms
Space the terms evenly. For a 5-rung ladder with bi-monthly access, use 2, 4, 6, 8, and 10-month terms. Then roll each into a 10-month term at maturity.
Step 4: Shop for the best rates at each term
Different banks offer the best rates at different terms. You don't need to use the same bank for every rung. Compare current rates in our Best Term Deposit Rates guide.
Step 5: Set maturity reminders
Banks auto-roll deposits at maturity, often at a lower rate. Set calendar reminders 7 days before each maturity to review your options.
Worked Example: $50,000 Five-Rung Ladder
Assuming current rates of approximately 4.40-4.80% p.a. depending on term:
| Rung | Amount | Term | Rate (approx.) | Interest Earned |
|---|---|---|---|---|
| 1 | $10,000 | 3 months | 4.40% | $110 |
| 2 | $10,000 | 6 months | 4.60% | $230 |
| 3 | $10,000 | 9 months | 4.70% | $353 |
| 4 | $10,000 | 12 months | 4.80% | $480 |
| 5 | $10,000 | 15 months | 4.75% | $594 |
Total first-cycle interest: approximately $1,767
Compare this to a single 12-month deposit at 4.80%: $2,400. The ladder earns about $630 less in the first cycle, but you had access to $10,000 every three months throughout. For many people, that liquidity is worth far more than $630.
Laddering in Different Rate Environments
If Rates Are Rising
Laddering is excellent in a rising rate environment. As each rung matures, you reinvest at the new, higher rate. Over time, your average rate rises with the market. If you'd locked everything into a single long-term deposit, you'd be stuck at the old lower rate.
If Rates Are Falling
Laddering provides partial protection against falling rates. Your locked-in rungs continue earning the higher rate until they mature. Only the reinvested rungs drop to the new lower rate. This smooths out the impact of rate cuts.
If Rates Are Stable
In a flat rate environment, a single longer-term deposit will usually earn slightly more than a ladder (because longer terms typically offer higher rates). The ladder's advantage here is purely liquidity.
Common Mistakes
- Forgetting to monitor maturities. Auto-rollover rates are almost always lower than the best available rate. Always actively shop at maturity.
- Too many rungs for a small balance. A 12-rung ladder with $1,000 per rung earns minimal interest and creates unnecessary admin. Keep it simple.
- Ignoring tax implications. Interest is taxed in the year it is received (or credited, for deposits over 12 months). Factor your marginal tax rate into your return calculations.
- Using the same bank for every rung. Different banks lead at different terms. Spreading across institutions maximises your rate and keeps each deposit under the $250,000 FCS guarantee per ADI.
The Decision: Ladder or Lock?
TD laddering is a straightforward strategy that gives you regular access to your savings while earning close to term deposit rates. It's not the absolute highest return option (a single long-term deposit beats it on pure yield), but for anyone who values flexibility alongside returns, it's hard to beat.
Start with a 5-rung ladder, compare rates across multiple banks, and set calendar reminders for each maturity.
Frequently Asked Questions
Ready to take the next step?
Put this guide into action - compare your options now.