Your supplier is offering you a fixed rate. We'll tell you if it's worth taking — and show you the pound difference.
Then in step 2 you'll enter your fix offer details — and that's it!
Variable tariff — your rate moves with the market. Ofgem adjusts the price cap quarterly, so bills can go up or down.
Fixed tariff — your rate is locked for a set period, typically 12–24 months. You're protected if prices rise, but you won't benefit if they fall.
This tool compares the two using your actual usage figures, so you can see the real pound difference over the fix term.
Upload bill
Check numbers
Result
⚡
Drop your bill here
PDF or photo · Your price change letter works best
✓
🔒 Privacy first — your file is sent securely, used only to read your numbers, and immediately discarded. Never stored.
Reading your bill…
Step 1 — Current bill
Step 2 — Fix offer
Result
✓Numbers extracted — check they look right, then continue
①
Your current rates
kWh
p/kWh
p/day
I also have gas
kWh
p/kWh
p/day
Step 1 — Current bill
Step 2 — Fix offer
Result
②
Your fix offer
p/kWh
p/day
p/kWh
p/day
months
✓ Copied!
Ready to act on your result?
The maths, line by line
Component
Current (variable)
Fixed offer
This assumes your current variable rate stays the same for the full term. If rates rise, fixing becomes better value. If rates fall, staying variable could save more.
Clearrate may earn a commission if you switch via our links. This never affects our calculations.