How we calculate your monthly payment
Your monthly payment is based on an estimated annual usage allowance, spread evenly over 12 months to make budgeting easier.
We track your actual usage against that allowance using your meter readings so bills reflect your real consumption as closely as possible.
If you add or remove a service (e.g., adding gas/electricity or removing a service), we adjust your allowance and monthly payment accordingly.
Tip: submitting regular meter readings helps keep your payments accurate.
Your first month (pro-rata)
When you first join, your initial payment may be smaller than your agreed monthly price.
This is a pro-rata payment, covering only the days from when your service started until your first full billing cycle begins.
After that, your agreed monthly payment (confirmed at sign-up or over the phone) will apply.
Ongoing reviews and changes we may make
After your first three months, we begin reviewing your usage monthly. If we see consistent over-use versus your allowance, we may increase your payment to avoid a large charge at the end of your contract. We’ll email you and issue a new invoice if this happens.
Your monthly payment might also change due to:
Price-cap updates (SVT only): If you are on a Standard Variable Tariff (SVT), payments may adjust in line with the Ofgem price cap, which is reviewed every three months.
New products or services: If you add a service (e.g., broadband or council tax billing), we’ll adjust your monthly payment to reflect this.
Housemate changes (split billing): If someone moves in or out, your share may change.
Annual price reviews (other services): Some non-energy suppliers review prices annually (often around 1 April). If they change their prices, we pass these through and give you advance notice.
End-of-contract settlement (true-up)
Your contract is based on a yearly allowance.
If you’ve used less than expected, any credit will be refunded at the end.
If you’ve used more, the extra will be billed to you. Your smart or submitted readings are used to calculate this.
Why an invoice might look different to what you expected
A service was removed/added (e.g., broadband) — once corrected, invoices will return to normal.
A price-guarantee credit may be applied to offset standing charge or unit price differences.
If anything looks unclear, contact us — we’re happy to explain your bill.
Keep payments accurate
Submit monthly meter readings if you’re on a metered energy tariff.
If you don’t submit a reading, industry-estimated readings will be used, which can impact accuracy — regular submissions are best.
You can view upcoming payments, submit readings and download invoices in your Bunch Portal.