Fixed vs Variable Mortgage in Ireland: A 2026 Decision Framework
The ECB has cut rates multiple times since the 2023 peak, but Irish lender rates haven't fallen as fast. Should you lock in a fixed rate now, or gamble on variable? Here's a framework for deciding — not a guess, but a structured approach.
Where Rates Stand Now
As of early 2026, Irish mortgage rates sit in the 3.4–4.4% range. Fixed rates for 3–5 years are typically 3.4–3.7%, while variable rates are 4.1–4.4%. That's a 0.5–0.8% gap favouring fixed rates — unusual historically, and it tells you something: lenders expect rates to stay stable or fall slightly, so they're pricing fixed rates lower than variable.
| Rate Type | Typical Range (March 2026) | Best Available |
|---|---|---|
| 1-year fixed | 3.50–3.80% | 3.50% (Avant Money) |
| 3-year fixed | 3.40–3.65% | 3.40% (Avant Money) |
| 5-year fixed | 3.45–3.70% | 3.45% (Avant Money) |
| Variable | 4.10–4.35% | 4.10% (Avant Money) |
Complete Buyer's Guide
The full buying toolkit. Everything in the Starter Kit plus budget model, negotiation scripts, and comparison matrix.
The Decision Framework
Choose Fixed If:
- You value budgeting certainty — knowing your exact monthly repayment for 3–5 years
- You're stretching your budget — a rate rise would cause financial stress
- Fixed rates are cheaper than variable — which they are right now (rare and worth locking in)
- You won't need to break the mortgage early — break fees apply to fixed rates
Choose Variable If:
- You expect rates to fall significantly — and you want to benefit immediately
- You plan to sell or switch within 1–2 years — no break fee risk
- You have a large financial buffer — you can absorb rate increases without stress
- You want maximum flexibility — overpayments, lump sums, or early repayment without penalty
The Numbers: €300,000 Mortgage Over 25 Years
| Scenario | Rate | Monthly | Total Interest (25yr) |
|---|---|---|---|
| 3-year fix at 3.45% | 3.45% | €1,493 | €147,900 |
| Variable at 4.15% | 4.15% | €1,612 | €183,600 |
| Variable, rates drop 0.5% in year 2 | 4.153.65% | €1,612€1,527 | ~€165,000 |
| Variable, rates rise 0.5% in year 2 | 4.154.65% | €1,612€1,698 | ~€203,000 |
On current pricing, the 3-year fix saves €119/month compared to variable — and gives you certainty. Variable only wins if rates drop by more than 0.75% within the first year, which no major forecaster currently predicts.
The Green Mortgage Angle
If your home has a BER of B3 or better, green mortgage rates drop a further 0.1–0.3%. That could bring a 3-year fix down to 3.20–3.30% — a significant saving. If you're close to B3, it may be worth upgrading insulation or heating before applying. Get your BER at Homerating.ie to check, and see upgrade guides at HomeEnergyGuide.ie for costs and grants.
The Verdict for 2026
In the current market, fixing for 3–5 years is the stronger choice for most Irish borrowers. Fixed rates are cheaper than variable, the ECB trajectory is uncertain, and the certainty premium is worth paying. The exception: if you plan to sell or remortgage within 12–18 months, variable avoids break fees.
Whatever you choose, use our Mortgage Comparison Calculator to compare every lender's rates with your exact numbers. And check if you qualify for a green mortgage discount — it could save you thousands.