Founders & Small BusinessFree
Supplier Price Increase Response Letter
A supplier increase is an offer to amend, not an amendment, and the letter routinely asks for more than the contract allows.
River reads the increase letter next to the agreement it lands under, and starts with the question nobody asks first: is the supplier allowed to do this. Escalation clauses usually cap the size of an increase, tie it to a published index, set a notice period, and limit how often it can happen. In the worked example the letter announced 14% on $610,000 of annual spend. The clause permitted 6.2%, on 90 days' notice, once per contract year, and the last increase was eight months ago.
That turns one number into three separate answers. The letter asks for $85,400 a year. The contract permits $37,820, and not for another four months, which makes the first twelve months $25,213. The gap is $60,187 that nobody would have questioned. A letter is an offer to amend, not an amendment. Under UCC section 2-209, a signed agreement that excludes modification except by a signed writing "cannot be otherwise modified", and paying the invoice is how that protection quietly gets waived.
Written for the owner who has no procurement function and reads these letters as weather. Nobody at a twelve-person fabricator has time to reopen an MSA signed two years ago, which is exactly why the letters keep working. Take the same discipline to the paper your customers send you with the customer contract review, and to a landlord's draft with the commercial lease review. Once the increase is settled, the pass-through decision belongs next to a cost reduction plan, and the cash timing belongs in a payment prioritization memo.
Three defects in one letter, and only one of them is the percentage
The size of the increase is the obvious problem and usually the smallest one. This letter breaks the clause three ways. It announces 14% where the index moved 6.2%. It gives 31 days' notice where the contract requires 90, and 59 days of early application is $13,804 on its own. And it is the second increase inside one contract year where the clause permits one. Each defect is worth money separately, and a reply that only argues about the percentage concedes the other two by silence.
Well-drafted escalation clauses cap the total, not just the step. The federal government's own standard clause is a useful yardstick. FAR 52.216-4 provides that "the aggregate of the increases in any contract unit price made under this clause shall not exceed 10 percent of the original unit price". If your agreement carries a lifetime cap, two accepted increases may already have exhausted it. That is a stronger position than arguing about this one, and it is invisible unless somebody totals the history from commencement.
The other half of the answer is downstream, and it is where owners overcorrect. A 14% increase on one input is not a 14% problem for the business, and passing 14% to customers would be both unnecessary and hard to defend. Here the affected stock is $610,000 against $2,140,000 of revenue, and $780,000 of that revenue is locked under fixed customer pricing for another nine months. Recovery lands entirely on the repriceable $1,360,000, which turns the announced increase into a 6.28% customer adjustment and the contractual one into 2.78%.
How it works
Send the letter
The notice itself, with its date, the effective date and the rate card it refers to.
Send the contract
The agreement and its exhibits. Note any earlier increases and roughly when they took effect.
Say what it feeds
Annual spend, the revenue it supports, and where your own pricing is contractually fixed.
Read the position
Defects priced, margin modelled, pass-through calculated, and a reply drafted against the clause.
What you get
- The increase tested clause by clause against the escalation terms in your own signed agreement
- Every defect priced separately, including notice periods, frequency limits and index mismatches
- The gap between what the letter asks for and what the contract permits, in annual dollars
- Gross margin before and after, at both the announced rate and the permitted rate
- The customer price increase that recovers the cost, computed on repriceable revenue only
- A reply letter that cites the clause, states the position, and asks for something specific
Common questions
Can a supplier really not just raise prices?
Not unilaterally, if a signed agreement covers the goods and sets out how prices change. The letter is an offer to amend. What makes it stick is your acceptance, and in practice acceptance usually looks like paying the new rate without comment for a few months rather than signing anything.
What if my contract has no escalation clause at all?
Then the rate card in the agreement is the price for the term, and the increase needs your agreement to take effect. That is a stronger position than a capped clause, not a weaker one. The review says which it is and quotes the operative language back to you.
We have already paid two invoices at the new rate. Is it too late?
Not necessarily, and the review models it both ways. Conduct can waive a term, and it can also be retracted going forward on reasonable notice for the part of the contract still to be performed. What you probably cannot recover is what you have already paid without objection.
Why is the customer increase smaller than the supplier increase?
Because the material is one input, not the whole cost. In the worked example a 14% increase on $610,000 of stock is $85,400 against $2,140,000 of revenue. Spread across the work that can actually be repriced, that is 6.28%, and the contractual 6.2% needs only 2.78%.
How does fixed customer pricing change the answer?
It decides how much of the increase you eat. Here $780,000 of the $2,140,000 is locked for nine months, so 36.4% of the exposed revenue cannot move at all and the whole recovery lands on the rest. Knowing that number before you reply is what stops an unaffordable concession.
I need this supplier. Should I still push back?
Push back on the process, not the relationship. A reply that quotes the clause and proposes the compliant number is a normal commercial exchange, and suppliers send these letters expecting some of them to be tested. Where the number matters less than the goodwill, trade it for terms, freight or allocation.
Does this give me legal advice about my contract?
No. It reports what the document says, what its own terms resolve to, and what the arithmetic produces. Whether a clause is enforceable where you are, and what conduct amounts to acceptance, is judgement. The output is what you take to a lawyer so the hour is spent on that rather than on reading.
Supplier Price Increase Response Letter
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