The January Bill Bomb: Auditing Supplier Price Notices in Half an Hour

December is peak season for plenty of small firms, which is exactly why a quiet price rise can slide by. A supplier sends a letter or email saying your rate is changing from 1 January. It looks official. It may even be lawful. But it is not automatic just because they have sent it. Your job this month is to find those notices, check the small print you actually agreed to, and decide whether to accept, challenge or buy a little time.

Why these notices land in December

Suppliers know you are busy. They also know that a price rise buried in a festive email is less likely to get questioned than one sent in a quiet September. Notice clauses often say something like 'we may vary prices on 30 days' written notice' or 'annually in line with RPI'. If your contract says 60 days and they have given 30, the notice may not be valid. If it says increases are capped, a bigger rise needs a conversation.

This is not about being difficult. It is about making sure the number on the January invoice matches the deal you signed.

The 30-minute audit

Open a spreadsheet and add these columns: supplier, contract date, notice clause, notice period, increase percentage, index used, effective date, auto-renew date, action. Then work through four passes.

1. Find the clause, not just the letter

Search your contract folder and email for words like 'price', 'variation', 'escalation', 'renewal' and 'notice'. Check the order form as well as the terms and conditions. Check side letters and email confirmations too. If there is no variation clause at all, a unilateral rise may need your agreement - though for large or complex contracts it is worth getting proper advice.

2. Check the maths

If the rise is linked to RPI or CPI, verify the index and the month used. Ask the supplier for their calculation if it is not shown. A common problem is a vague reference to 'inflation' when the contract names a specific index and a specific publication date. If there is a cap, hold them to it.

3. Catch the auto-renewal dates

Some notices are timed to land before a renewal deadline. Put every renewal date in your calendar with a reminder two weeks earlier. If you have missed a notice deadline by a day or two, ask for a short grace period. Plenty of suppliers will agree if you are polite and prompt.

4. Sort your response

Mark each supplier as accept, negotiate or review. Accept the ones where the rise is small and the service is good. Negotiate the ones where the increase is large, the notice is dodgy or the service has slipped. Review the ones where you have realistic alternatives.

A polite pushback script

You do not need a confrontational email. Try this:

Subject: Price increase notice - [account] - request for clarification

Hi [name],

Thanks for your note about the change from 1 January. Before we update our budget, could you send the contract clause relied on, the calculation used and the date the notice was issued? We are reviewing all supplier costs this month. We would also like to discuss [holding the current rate for six months / a phased increase / applying last year's index]. Happy to jump on a short call.

Best, [Your name]

That does three things: it asks for evidence, it shows you are paying attention, and it opens the door to a sensible conversation.

Buying time without burning goodwill

If the rise is steep, ask for a 30 or 60-day extension while you review your options. You can also propose a staged increase - half in January, half in April, for example. If you are a reliable payer, say so. Get any agreement in writing before you pay a revised invoice.

If they will not budge

Check your exit terms, notice period and any switching costs. For essential suppliers, focus on service levels and payment terms rather than just the headline price. Keep a record of what was agreed and when. If the increase is significant, compare two or three alternatives before you respond - even if you decide to stay.

Your last-working-week checklist for 2026

• Scan December post and search your inbox for 'price increase', 'renewal' and 'notice'.
• Update the supplier tracker with every rise and effective date.
• Check January invoices against the agreed rate.
• Diarise auto-renewal dates with two-week reminders.
• Send clarification requests for anything vague or unexpected.
• Budget for the rises you decide to accept.

Half an hour now is a lot cheaper than discovering a pile of quiet increases when you do your January bookkeeping.