Decision Summary
Overall outcome based on all metrics
✓ EUR/Euribor (for borrowers) wins
EUR floating rates (Euribor) are approximately 175 bps lower than GBP SONIA. directly benefiting EUR floating rate borrowers with cheaper mortgages and corporate loans. For investors, GBP SONIA-linked FRNs yield more. ECB is near neutral while BoE has further to cut. suggesting gradual convergence through 2026-2027. The spread is expected to narrow as BoE catches up with ECB's easing cycle.
Floating rate mortgage borrower
🇪🇺 EUR (Euribor)
EUR tracker approximately 3,0-3,5% versus GBP tracker approximately 5,0-5,5%. EUR approximately 2 points cheaper
Floating rate note investor
🇬🇧 GBP (SONIA)
Higher SONIA reference rate produces higher coupon income on GBP FRNs. better for fixed income investors
Corporate floating borrower
🇪🇺 EUR
Euribor approximately 175 bps lower. Lower absolute corporate loan cost despite similar credit spreads
Rate direction 2026-2027
🇬🇧 GBP
BoE has further to cut from current level. SONIA expected to decline toward EUR. Convergence play
Benchmark market clarity
🇬🇧 GBP (SONIA)
SONIA transition complete. EUR managing dual Euribor/ESTR benchmark. operationally more complex
~2,25-2,50%
Euribor 3M (2026 approx)
Post-ECB cut cycle. Well below 2023 peak of approximately 4%
~4,00-4,25%
SONIA overnight (2026 approx)
Closely tracks Bank of England base rate approximately 4,25-4,50%
~170-200 bps
EUR-GBP rate spread
EUR floating rates approximately 1,7-2,0% lower than GBP equivalents in 2026
June 2024
ECB cut cycle start
ECB began cutting from 4% peak. Multiple cuts 2024-2025. Near neutral in 2026
More gradual
BoE cut pace
Bank of England cut more slowly than ECB. Stickier UK services inflation
⚖️ Side-by-Side Comparison
Metric
🇪🇺 Euribor (EUR)
🇬🇧 SONIA (GBP)
Winner
3-Month Benchmark Rate
Floating rate reference 2026
Euribor 3M approximately 2,25-2,50%
SONIA compounded approximately 4,00-4,25%
🇪🇺 Euribor (EUR)
EUR borrowers benefit from approximately 175 bps lower floating rates than GBP equivalents
Floating Rate Mortgage
EUR tracker approximately 3,0-3,5% all-in (Euribor + bank margin)
GBP tracker approximately 5,0-5,5% all-in (SONIA + bank margin)
🇪🇺 Euribor (EUR)
EUR floating mortgage approximately 2 percentage points cheaper than GBP equivalent in 2026
Rate Direction Outlook
ECB near neutral (~2,0-2,5%). Fewer further cuts expected. Euribor near floor
BoE still cutting gradually. SONIA likely declining further through 2026-2027
🇬🇧 SONIA (GBP)
GBP rates expected to fall further. EUR rates near neutral. less EUR improvement expected
FRN Investor (Floating Rate Note)
EUR FRN coupons lower. Euribor reference reduces income for investors
GBP FRN coupons higher. SONIA reference provides better yield for FRN investors
🇬🇧 SONIA (GBP)
For FRN investors: GBP SONIA-linked notes yield approximately 175 bps more than EUR equivalents
Corporate Floating Loan
EUR corporate floating: Euribor + credit spread. Lower absolute borrowing cost
GBP corporate floating: SONIA + credit spread. Higher absolute cost but BoE still cutting
🇪🇺 Euribor (EUR)
EUR corporate borrowing materially cheaper in absolute terms despite potentially similar credit spreads
Benchmark Transition Status
Dual market: Euribor (term rates) + ESTR (overnight). EUR managing parallel benchmarks
SONIA only. LIBOR fully discontinued December 2021. Clean single overnight benchmark
🇬🇧 SONIA (GBP)
UK SONIA transition complete. single clear benchmark. EUR manages Euribor/ESTR dual curve complexity
EUR/GBP Hedging Cost
EUR investors hedging GBP: approximately 0,3-0,8%/year (cross-currency basis)
GBP investors hedging EUR: comparable basis swap cost in reverse
🇪🇺 Euribor (EUR)
EUR-GBP hedging costs lower than EUR-USD. Makes GBP FRN accessible for EUR investors efficiently
ⓘ Euribor rates from EMMI published fixings 2026. SONIA from Bank of England published daily rate 2026. ECB Deposit Facility approximately 2,25-2,50%. BoE base rate approximately 4,25-4,50% in 2026. ESTR (Euro Short-Term Rate) replaced EONIA as EUR overnight benchmark. Euribor continues for term rates. Mortgage all-in rates = benchmark + typical bank margin approximately 0,8-1,0%. EUR-GBP cross-currency basis swap from market estimates 2026. All EU formatting.
🧠 Analysis
The 175 bps Euribor-SONIA Spread Directly Reduces EUR Mortgage Costs by Approximately 2 Percentage Points
Key Evidence
- Euribor 3M approximately 2,25-2,50% versus SONIA approximately 4,00-4,25% = approximately 175 bps spread
- EUR tracker mortgage (Euribor + 1% margin): approximately 3,3-3,5% all-in in 2026
- GBP tracker mortgage (SONIA + 1% margin): approximately 5,0-5,25% all-in in 2026
- Monthly payment difference on €300.000 mortgage at 3,3% versus 5,1%: approximately €280/month lower in EUR
What This Means
For holders of Euribor-linked floating rate mortgages, 2026 is significantly more affordable than 2023 when Euribor reached approximately 4%. The approximately 175 bps Euribor-SONIA gap means EUR mortgage holders pay approximately €280/month less than GBP equivalent holders on a €300.000 loan. This translates to approximately €3.360/year lower mortgage cost. a material household budget improvement. The gap was created by ECB's faster and more extensive rate cutting cycle versus the Bank of England.
Source: EMMI Euribor rates 2026. Bank of England SONIA rates 2026. ECB and BoE rate decisions 2024-2026
SONIA Transition Was Completed in December 2021. UK Has a Cleaner Benchmark Market Than EUR
Key Evidence
- GBP LIBOR fully discontinued December 2021. FCA determination that LIBOR was no longer representative
- SONIA (Bank of England administered since 2016) is the sole GBP overnight benchmark
- All GBP FRNs, loans and derivatives now reference SONIA or compounded SONIA
- EUR manages both Euribor (term: 1W, 1M, 3M, 6M, 12M) and ESTR (overnight). dual benchmark creates documentation complexity
What This Means
The UK's clean SONIA benchmark market provides operational clarity that the EUR dual Euribor/ESTR structure does not. GBP financial documents reference a single benchmark. EUR financial products must specify whether they reference Euribor (which tenor) or ESTR, and handle fallback provisions for Euribor discontinuation scenarios. For operational treasury and risk management, the UK's simpler single benchmark reduces documentation complexity and legal risk. The EUR market is working toward greater ESTR adoption but Euribor remains dominant for term products.
Source: FCA LIBOR transition completion announcement. EMMI Euribor sustainability statement. Bank of England SONIA administration
✓ Understanding Check
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🎯 Make Your Decision
EUR or GBP floating rates. which is more favourable for your position?
Based on whether you are borrower or investor
Floating rate mortgage borrower
🇪🇺EUR (Euribor)
EUR tracker approximately 3,0-3,5% versus GBP tracker approximately 5,0-5,5%. EUR approximately 2 points cheaper
Floating rate note investor
🇬🇧GBP (SONIA)
Higher SONIA base means higher FRN coupon. GBP FRNs yield approximately 175 bps more than EUR equivalents
Corporate floating rate borrower
🇪🇺EUR
EUR corporate borrowing costs lower in absolute terms. Euribor approximately 175 bps lower base rate
Rate convergence play
🇬🇧GBP
BoE has further to cut. SONIA expected to decline toward Euribor through 2026-2027
Benchmark simplicity
🇬🇧GBP (SONIA)
Single clean overnight benchmark. EUR manages dual Euribor/ESTR market
⚖️ Related Comparisons
📊 Related Intelligence
🔬 Methodology
Comparison Methodology
Euribor from EMMI 2026. SONIA from BoE. ECB-BoE differential from central bank decisions. Mortgage all-in = benchmark + approximately 0,8-1,0% margin. EUR-GBP basis from market estimates. Rate direction from MPC and ECB minutes/guidance.
Formula
EUR_mortgage = Euribor_3M + margin | GBP_mortgage = SONIA + margin | Spread = SONIA - Euribor_3M
❓ Frequently Asked Questions
SONIA (Sterling Overnight Index Average), administered by the Bank of England, replaced GBP LIBOR which was discontinued in December 2021. SONIA reflects the rate at which banks borrow sterling overnight on an unsecured basis. based on actual transactions rather than the submitted estimates LIBOR used. All GBP financial products now reference SONIA or compounded SONIA. The UK completed its transition ahead of most other currency areas.
Market consensus expects gradual convergence as the Bank of England continues its rate-cutting cycle. ECB is already near neutral (approximately 2-2,5%) with limited room for further cuts. BoE is still cutting from approximately 4,25-4,50%, with a terminal rate estimated at approximately 3-3,5%. As BoE catches up, SONIA is expected to decline toward Euribor. narrowing the current approximately 175 bps spread. Full convergence is not expected but a narrowing to approximately 50-100 bps is plausible by 2027.
Euribor is the benchmark for most variable and tracker mortgages in the eurozone. A typical structure: Euribor 12M + 1,0% margin. When Euribor 12M peaked at approximately 4% in 2023, all-in rates reached approximately 5%. With ECB cuts bringing Euribor 12M to approximately 2,50-2,75% in 2026, all-in rates have fallen to approximately 3,5-3,75%. Mortgage holders with Euribor-linked loans have seen significant payment relief. a direct benefit of the ECB's 2024-2025 rate cutting cycle.
✓ Key Takeaways
Key Takeaways
✓
Euribor 3M approximately 2,25-2,50% versus SONIA approximately 4,00-4,25%. approximately 175 bps EUR advantage for borrowers
✓
EUR floating mortgages approximately 3,0-3,5% all-in. GBP tracker mortgages approximately 5,0-5,5% all-in
✓
GBP SONIA transition complete December 2021. single clean benchmark. EUR manages dual Euribor/ESTR
✓
ECB near neutral rate (~2,0-2,5%). BoE has more to cut. GBP rates expected to decline toward EUR through 2026-2027
✓
For borrowers: EUR floating is cheaper. For FRN investors: GBP SONIA-linked yields more
✓
EUR-GBP hedging cost approximately 0,3-0,8% lower than EUR-USD. EUR investors can access GBP efficiently
✓
Rate spread reflects ECB faster 2024-2025 cut cycle versus BoE's more gradual path
✓
Convergence expected as BoE continues cutting. current 175 bps spread likely to narrow to 50-100 bps by 2027
Sources & References
Comparison for informational purposes only. Results depend on individual circumstances. Last updated Jan 2026.
Disclaimer
Rate projections are consensus estimates. Central bank decisions data-dependent. Not investment advice.
Rate projections are consensus estimates. Central bank decisions data-dependent. Not investment advice.