We check every supplier invoice against your own buying history and your agreed rates. When something's wrong we write the challenge with the evidence attached for you to send — and when the credit note lands in your accounts, we match it to the finding and book it.
Free look-back over your last 12 months. No card, no price lists to prepare, read-only connection to Xero.
Why nobody catches this
So when a supplier nudges a price up, that becomes the new normal — and next month it gets checked against the higher number. The increase quietly certifies itself.
Stock and ordering systems keep one cost per item and overwrite it every time you buy. There's no history left to compare against, so there's nothing to notice.
Checking the invoice against the purchase order only proves the invoice matches the order. If the order was raised at the higher price, everything balances and nothing is flagged.
They only work if someone keeps them current — and they go silent without telling you when a supplier changes a product code.
CostCreep keeps every price you have ever paid. That's the difference between noticing and not.
No setup
Most businesses don't have their agreed rates written down anywhere tidy — and every other tool that checks prices needs exactly that, typed in and kept up to date, before it does anything at all.
CostCreep learns what normal looks like from your own invoices. Connect your accounts and the last twelve months are checked before you've done anything. If you do have price lists, upload them and the checks get sharper — but nothing waits on you.
How it works
Every other tool stops at showing you a red box. That's the point where most of this money quietly gets written off, because nobody has time to argue about £185.
Read-only link to Xero — or forward invoices to your CostCreep address and we'll read them.
Every line, every month, against your own buying history and any agreed rates you've given us.
We write the email to the supplier with the evidence attached. You read it, change anything you like, and send it from your own email.
When the credit note comes through your accounts we match it to the finding and book it. That's the only thing we ever call recovered.
Your suppliers, your rules
You see every draft before your supplier does, and you decide whether it goes at all.
CostCreep writes each challenge — which invoices, what was agreed, what was charged, with the evidence attached — and stops there. You read it, change anything you like, and send it from your own email. Nothing goes to a supplier from CostCreep.
Suppliers you'd rather ring yourself get a one-page call card instead — what to say, which invoices, what to ask for.
Plenty of tools show you a big "potential savings" number. We keep two numbers and never blend them: what we've identified in your data, and what has been recovered as a credit note you can point to in your accounts.
It's the harder number to move. It's also the only one that pays for itself.
What it catches
A 4% rise here, a new handling charge there, the same invoice paid twice in a busy month. Individually forgettable. Annually, material.
Unit prices drifting up month after month without anyone agreeing to it. We can show you exactly when it moved, and by how much.
Every line checked against the rate that was actually in force on that date.
Fuel, handling, pallet, small-order, out-of-hours. Flagged the first time a line shows up that's never been on an invoice from that supplier before.
Including the ones that don't look identical — re-sent under a new reference, or split across two documents.
A supplier raises a credit note, the invoice gets paid in full anyway, and the credit sits on the account until it quietly expires. We find them and flag them so they actually get used.
Pricing
The look-back over your last 12 months is free. You pay to keep the checks running and the claims drafted.
Agreed with you in writing, before anything is billed.
Accountants and fractional CFOs — talk to us about working across your clients.
Questions
No. CostCreep sits alongside whatever you already use. It makes a read-only connection to Xero — it can read your bills, it cannot change anything. If you'd rather not connect at all, forward invoices to your CostCreep email address or upload a spreadsheet.
Connect your accounts and CostCreep checks the last 12 months of supplier invoices. Free, nothing to prepare, and you'll see the findings before you decide anything.
Get your free look-backNo card required · Read-only access · Cancel the connection any time