Quick answer
- Build the plan from the target amount, target date and current balance before assuming any interest.
- For short goals, contributions usually matter more than interest; for longer goals, AER, tax and inflation matter more.
- AER helps compare savings accounts, but lodgement limits, balance tiers and access conditions can change the real return.
- Eligible deposits may be protected up to €100,000 per person per institution, subject to the applicable scheme rules.
Plan your savings target
Use the Savings Goal Calculator to estimate monthly contributions, interest, and time needed to reach your target.
On this page
Build the goal backwards
- Set the target amount and date.
- Subtract current savings that are genuinely available for this goal.
- Calculate the zero-interest monthly gap.
- Add a conservative AER scenario and the relevant DIRT treatment.
- Stress-test missed contributions, a lower rate and a higher target cost.
The zero-interest baseline is simple: (target − current balance) ÷ months remaining. Interest can then improve the result, but the plan does not fail if the provider rate changes.
Worked example: €20,000 target in three years
Assume a €20,000 target, €5,000 already saved and 36 months remaining.
| Scenario | Estimated monthly saving | What it assumes |
|---|---|---|
| No interest | €416.67 | The €15,000 gap is funded entirely by contributions. |
| 2% AER-style growth, after 33% DIRT | About €403.12 | Monthly compounding and DIRT estimated as interest is credited. |
| 2% gross / DIRT-exempt illustration | About €396.49 | No DIRT drag on the modelled interest. |
The difference shows why tax treatment matters, but also why contributions drive a short three-year goal. Real accounts can credit interest at different times or cap the advertised rate.
Choose an account that matches the deadline
| Account feature | Useful when | Watch for |
|---|---|---|
| Easy access | The goal date is flexible or money may be needed quickly. | Lower or variable rate. |
| Notice account | You can plan withdrawals in advance. | Notice period and early-access conditions. |
| Fixed term | A lump sum is not needed until a known date. | Lock-in, minimum deposit and early-withdrawal rules. |
| Regular saver | You are building the balance monthly. | Monthly caps, missed-lodgement rules and promotional periods. |
Use CCPC comparison tools to check current account features. Do not use an emergency fund for a fixed term that prevents timely access.
AER, DIRT and inflation answer different questions
- AER: an annualised account-return comparison that reflects compounding.
- DIRT: tax that can reduce the deposit interest you keep.
- Inflation: the change in purchasing power; it does not reduce the bank statement balance directly.
Keep the nominal target and today’s-money target separate. If a car, deposit or education cost is likely to rise, update the target rather than hiding the increase inside an optimistic interest rate.
Protect the plan from common failures
If the target is essential, build a contingency line into the target rather than relying on the exact calculator figure.
Frequently asked questions
How do I calculate how much to save each month?
Subtract current savings from the target and divide the gap by the months remaining for a zero-interest baseline. Then test a conservative interest and DIRT scenario.
Should I include savings interest in the plan?
Yes as a scenario, but keep a low-rate or zero-interest version so the target does not depend on a rate that may change.
What is AER?
AER shows what the interest on a savings account would be if compounded and paid over a year, helping compare accounts on a consistent annual basis.
Can I use this plan for a house deposit?
Yes. Keep the deposit target separate from Stamp Duty, legal, valuation, survey, moving and post-purchase buffer costs.
What if I miss a monthly contribution?
Recalculate using the new balance and months remaining. You may need a higher contribution, later deadline or lower target.
Are regular saver headline rates applied to unlimited deposits?
Not always. Many products have monthly lodgement caps, balance tiers, promotional periods or other conditions. Check the product terms.
How does inflation affect a savings goal?
Inflation can increase the future cost of the goal even while the bank balance grows. Review the target amount periodically.
How much deposit protection applies?
Eligible deposits are generally protected up to €100,000 per person per credit institution under the relevant scheme, with special rules for joint accounts and certain temporary high balances.
Sources & references
- CCPC: Start saving and manage your money
- CCPC: Compare savings accounts
- CCPC: Regular savings comparison tool
- CCPC: Lump-sum savings comparison tool
- Deposit Guarantee Scheme: What we cover
- Deposit Guarantee Scheme: Calculation of compensation
- Revenue: Deposit Interest overview
- Revenue: Current DIRT rate
Related calculators
Use these tools for the numbers behind this guide.