Based on cost-of-living indices (Cardiff 64 vs Newcastle 61, London = 100), £55,000 in Cardiff has the same purchasing power as approximately £52,400 in Newcastle. Newcastle is 5% cheaper overall.
The equivalent accounts for the real cost of maintaining the same standard of living. Cardiff rent averages £900/month versus £750/month in Newcastle — a £150/month saving. Beyond rent, Newcastle is overall 5% cheaper across groceries, transport, restaurants, and utilities (Numbeo COL index 61 vs Cardiff's 64).
To achieve the same disposable income in Newcastle, you would need to earn £52,400 — calculated using Rightmove Q1 2026 rental data and HMRC 2025/26 tax rates. Any offer above £52,400 in Newcastle is a real-terms pay rise.
COL indices from Numbeo 2025 (London = 100). Rent = Rightmove Q4 2025 median for a 1-bed flat.
Moving from Cardiff to Newcastle saves £150/month on rent alone (£900 → £750/mo).
You can accept up to 5% salary reduction and maintain your lifestyle. Any offer above £52,400 in Newcastle is a real-terms pay rise.