A term deposit ladder is one of the most effective strategies for NZ investors who want higher rates than a savings account while maintaining regular access to some of their money.
Instead of putting $60,000 in a single 12-month term deposit, split it into three tranches of $20,000 — one maturing at 3 months, one at 6 months, one at 12 months. When each matures, reinvest at current rates. You get higher returns than a savings account, with one tranche maturing every quarter for liquidity.
Why Ladder?
Term deposits lock your money away — breaking one early typically costs you 1–3 months of interest. A ladder solves this:
Problem with a single term deposit:
- $60,000 in one 12-month term deposit: locked for 12 months, penalty to access early
- If you need $15,000 in month 7, you break the whole deposit
Solution with a ladder:
- $60,000 split into three tranches
- One tranche matures every quarter — you have regular access without breaking anything
How to Set Up a Term Deposit Ladder
Example: $60,000 over 12 months
| Tranche | Amount | Initial term | Next action |
|---|---|---|---|
| 1 | $20,000 | 3 months | At maturity: reinvest for 12 months |
| 2 | $20,000 | 6 months | At maturity: reinvest for 12 months |
| 3 | $20,000 | 12 months | At maturity: reinvest for 12 months |
After the first cycle (12 months), all three tranches are on 12-month terms staggered by 3 months. One tranche matures every quarter.
Ongoing structure after 12 months:
- Jan: $20,000 matures → reinvest 12 months (matures next Jan)
- Apr: $20,000 matures → reinvest 12 months (matures next Apr)
- Jul: $20,000 matures → reinvest 12 months (matures next Jul)
- Oct: $20,000 matures → reinvest 12 months (matures next Oct)
Rate Advantage of Laddering
Term deposit rates are typically highest in the 6–12 month range. Shorter terms (30–90 days) usually earn less. But a full 12-month lock is inconvenient if you might need the money.
A ladder gives you the 12-month rate on most of your money, while a portion matures frequently for liquidity.
Vs all short-term (90-day rolling): You lose 0.3–0.7% p.a. in rate but gain maximum liquidity.
Vs all long-term (12-month): You gain maximum rate but lose flexibility.
Ladder: Best middle ground.
What to Do When Each Tranche Matures
- Check current rates at your bank and 2–3 competitors
- Compare the 12-month rate (typically the sweet spot)
- If you don’t need the funds: reinvest immediately for another 12 months
- If rates have risen: consider 6-month terms (bet on rates staying up)
- If rates have fallen: consider 12–24 months (lock in before further falls)
Setting a diary reminder 2 weeks before each maturity date ensures you compare rates before the bank automatically rolls it over at the standard rate (which may be lower than special offers).
Multi-Bank Ladder (Crown Guarantee Optimisation)
The Crown Retail Deposit Guarantee covers up to $100,000 per depositor per institution. For deposits above $100,000, spreading across institutions provides full guarantee coverage.
Example: $200,000 laddered across two banks
| Bank | Tranche | Amount | Term |
|---|---|---|---|
| ANZ | 1 | $33,333 | 3 months |
| ANZ | 2 | $33,333 | 6 months |
| ANZ | 3 | $33,333 | 12 months |
| Heartland | 1 | $33,333 | 3 months |
| Heartland | 2 | $33,333 | 6 months |
| Heartland | 3 | $33,333 | 12 months |
This approach: full guarantee coverage (under $100k at each institution), higher rates at Heartland, liquidity every quarter.
Ladder for Retirees
Term deposit ladders are particularly popular among NZ retirees who need:
- Reliable income (one tranche maturing every quarter = regular cash)
- Capital preservation (no market risk)
- Flexibility (access funds at each maturity without penalty)
A common retiree approach: 2-year ladder with quarterly maturities, providing 8 maturing tranches across 2 years — one per quarter, matching expected cash flow needs.
→ See: Term Deposits for Retirees NZ
Term Deposit Ladder vs Bond Ladder
Both strategies use multiple maturity dates to manage liquidity and rate risk. The difference:
- Term deposit ladder: Simpler, government-guaranteed up to $100k per institution, fixed bank rate
- Bond ladder: More sophisticated, can be bought/sold on market, wider yield range, not government-guaranteed per se
For most NZ retail investors, a term deposit ladder is simpler and more practical.