Passing on Cost Increases: How to Write a Price Increase Letter and Pace Customer Conversations

Bottom line first: A price increase isn’t a letter you send; it’s a four-to-six-week communication process. Most lost deals aren’t lost on the size of the increase but on how abruptly it lands: the customer finds out in the final week, with no cushion at all. A workable approach: prepare three types of presentable evidence in advance, communicate the 3% to 8% increase tier by tier, soften the impact with price locks and phased implementation, and use the increase as an opportunity to straighten out payment terms at the same time.

1. A price increase is won or lost in the four to six weeks before the letter goes out

How customers actually react to a price increase depends not on the size of the increase but on how much time they have to absorb it and whether they have a way to save face. The more lead time before the letter goes out, the lower the odds that customers treat the increase as “your mistake.” The common approach is to start the conversation four to six weeks ahead: meet with key accounts first, notify the rest by letter afterward. Information reaches people in sequence without raising suspicion. With enough time, customers can adjust purchasing plans and complete internal approvals. Send the letter within a week and they have no time to react, which easily triggers emergency comparison shopping. Announcing an increase after the goods arrive is an absolute red line; most buyers will treat it as a breach of contract.

Let’s be clear about the boundaries first:This article only covers how to raise a price that has already been set. Pricing methods themselves are a separate topic, covered in /insight/b2b-overseas-pricing-cost-plus-to-value/. Whether payment terms need to be renegotiated after an increase is a payment structure question, covered in /insight/export-payment-terms-credit-risk-four-tiers/. Discuss all three at once and the usual outcome is that the price never goes up and you give away the payment terms anyway.

2. Three types of presentable evidence for a price increase

Whether your reason for raising prices holds up depends on whether customers can verify the evidence. Presentable evidence falls into three types; gather at least two before sending the letter.

Type of Evidence	Specific form	Verifiable source	Persuasiveness
Raw material indices	Public commodity index trends, such as steel, copper, aluminum, chemical raw materials	Public market data sites, industry association monthly reports	High
Exchange rate ranges	Changes in the exchange rate between the billing currency and RMB, with the quote date and current date noted	Central bank central parity rate, public exchange rate data	Medium-high
Supply chain notices	Formal price adjustment letters from upstream suppliers and shipping lines (redacted)	Original supplier documents, excerpts available	High

Evidence should be paired with a cost breakdown table. The redacted approach is to give only structure and proportions, not absolute amounts or supplier names: Break the ex-works price into five components, each with a percentage, and show which two drove this round of increases and by how many points. Customers don’t need to know what you paid for a sheet of steel — they just need to confirm you’re not padding your margin.

Cost item	Previous share	Current share	Change	Description
Raw materials	55%	61%	+6 points	Main driver, with index trend
Labor & manufacturing	18%	18%	Flat	Unchanged for two years
Energy	6%	7%	+1 point	Electricity rate adjustment
Packaging & freight	10%	10%	Flat	—
Overhead	11%	9%	-2 points	Absorbed part of it internally
Total ex-works price	100%	105%	+5%	This round’s increase

If the breakdown adds up to 5%, raise prices 5% — don’t round up to 7%— the moment someone questions those extra 2 points, the whole table loses credibility.

3. Setting the size: one increase or two

For most manufacturing customers, 3% to 8% is the range they can absorb in a single increase; anything above 8% usually needs to be split. The two approaches match two types of cost movement:One increase For shock-type costs like a sudden raw material spike or a sharp currency drop. Go straight to 6%–8%: the customer feels it once but knows exactly where they stand, and you only need one round of negotiation.Two increases(3%–4% first, then another 2%–3% in three to six months) For trend-type costs and price-sensitive customers. Each increase feels lighter, but you’ll need two rounds of negotiation.

My advice: if you can do it in one increase, do it in one. The hidden cost of splitting is “increase fatigue” — by the second letter, the customer assumes you’ll raise prices at any time, which only makes them more likely to look for backup suppliers. The one exception is an increase above 8%: split it in two, with the larger increase first and plenty of evidence, then a smaller top-up. That survives far better than a single 12% increase.

Whichever approach you take, always state the next pricing window(for example, “the next price review will be no earlier than six months from now”). Giving certainty is the cheapest concession in any price-increase conversation.

4. The six-part structure of a price-increase letter

A price-increase letter is not an apology — it’s a complete business document. Use this six-part structure and keep the whole thing under 300 words.

Segment	Content	Length guide	Key points
1. Affirm the relationship	Thank them for the partnership and cite one specific fact about it	2–3 sentences	Be specific, not generically polite
2. Facts and numbers	Explain the cost change: attach the breakdown table or an index excerpt	3–4 sentences plus a table	Stick to what can be verified, not what’s difficult
3. New price and effective date	New price list, effective date, orders covered	2 sentences	Whether the effective date runs from order confirmation or shipment must be stated explicitly
4. Buffer arrangement	Orders placed before the effective date keep the old price, or offer a price-lock period	2 sentences	Give them a way out, but not indefinitely
5. Alternatives	Volume tiers, spec changes, packaging changes — options that lower the total price	2–3 sentences	Give customers a choice, not just take-it-or-leave-it
6. Contact	Name the point of contact and the reply deadline	1–2 sentences	State how many days you’d like to hear back within

The second paragraph is the easiest one to get wrong. The common mistake is writing “raw material costs have risen sharply and operating costs keep climbing” — three sentences with zero information. Instead, write “copper is up about 9% since March, it’s roughly 30% of our cost, which works out to about 2.7 points on the ex-works price.” One sentence does the work of a whole paragraph.The more specific the numbers, the less room customers feel they have to negotiate.

The effective date in the third paragraph is where disputes cluster. Standardize on the order confirmation date: orders formally confirmed before the effective date ship at the old price, and inquiries that never became orders don’t count as locked in. Settle this internally before the letter goes out — don’t wait for customers to ask.

5. Tiered customer communication: lead time and channel

The same price increase should be communicated completely differently to a ten-year customer than to one you brought on this year. Split customers into three tiers by annual purchase volume, with the lead times and actions below.

Customer tier	Criteria (annual purchase volume)	Lead time	Channel	Who reaches out
Tier A	Customers accounting for over 10% of annual export revenue	6 weeks	One-on-one video call or in-person meeting; verbal first, then the letter	Owner or sales lead
Tier B	Annual purchase volume of $10,000 to $200,000	3 weeks	Formal letter, with a phone follow-up within three days to confirm receipt	Sales rep
Tier C	Scattered orders and long-tail customers	2 weeks	Standard letter, email delivery is enough	Sales rep

There’s one key move in the one-on-one meeting with a Tier A customer:Listen first, talk second. Spend the first half asking about their purchasing plans for the year, end-market conditions and inventory levels before you quote the increase. If their inventory is high and the market is weak, lean the buffer options toward price locks and staged increases; if the market is strong and they need goods urgently, the increase is actually easier to negotiate.

Tiered communication also has to guard against suspicion caused by information asymmetry: Tier A knows six weeks ahead, Tier C only two weeks ahead, and pricing information can travel from Tier A to Tier C. So when you meet with Tier A, say that “the formal letter will go out to everyone on a set date.” Different treatment is fine, but it can’t be perceived as a lack of transparency.

6. Buffer tools: the cost of price locks, staged increases and volume tiers

Buffer arrangements are what decide whether you keep customers through a price increase. Each of the three tools has a clear cost — work it out before you offer anything.

Buffer tool	Method	Your cost	What the customer gets	Applicability
90-day price lock	Orders placed within 90 days still ship at the old price	If raw materials rise another 3%, you’ve effectively given up 3%	A purchasing window to plan their budget calmly	Customer has clear near-term purchasing plans
Staged increase	Split the increase 50/50 across two quarters	Administrative cost of about 0.5%	Less pressure on cash flow	Customer is short on cash or heading into the off-season
Volume tiers	Commit to 20% more volume for the year and the increase drops by 30%	About 2 points of margin given up in exchange for committed orders	Unit price rises 2 points less	Customer has room to increase volume

The three tools can be combined, but hold one line:Buffers are limited in number, not open for endless renewal. A 90-day price lock means 90 days. If the customer waits until day 89 to order and doesn’t need the goods until day 100, you’re the one absorbing four months of raw material swings. To make a price lock stick, both the order deadline and the latest delivery date must be written into the confirmation email. Miss either one and it isn’t locked.

There’s also an unwritten rule:Give buffer to A-class customers, not C-class. C-class orders are small and low-loyalty, so a price lock is pure cost. A standard letter plus standard buffer is enough; no extra concessions.

7. Three Typical Reactions After a Price Increase and How to Handle Them

Once the letter goes out, reactions fall into a predictable set. Write your responses in advance and let your salespeople follow them.

Customer reaction	What’s behind it	Your move	Concession ceiling
Accepts, but wants more reliable delivery	After a price increase, they need supply certainty even more	Agree and put it in the contract. That’s an asset you’ve earned.	Delivery buffer goes from 7 days to 10 days
Asks to split the increase	Cash flow or internal approval pressure	Trade phased implementation for a committed annual volume	Split period no longer than two quarters
Threatens to switch suppliers	Mostly a bluff, occasionally real	Ask three questions before deciding whether to concede	Price concession no more than 30% of the increase

The third case tests your judgment the most. Ask three questions first: how long did it take their current supplier to replace you, how long does sampling and certification take for a new supplier, and will their end customers allow a material change?Switching costs are usually 3 to 6 months plus a round of certification fees, and the customer knows it, so the threat is more of a negotiating stance. Only concede once you’ve confirmed they’ll actually leave, and make the concession buy something: an annual framework, prepayment terms, a longer price lock. Cut the price just to keep them and they’ll leave the moment the market shifts.

8. Structural Improvements You Can Trade for with a Price Increase

A price increase is one of the few windows all year when customers pay attention: every customer re-examines their terms with you at that moment. At least three structural improvements can ride along.

What can ride along	Specific approach	Value at stake	Likelihood of rejection
Turn free services into optional add-ons	Put a price on free sampling, custom packaging, and on-site support; existing customers keep one free allowance	Recovers 0.5% to 1.5% of revenue per year	Low, little resistance when bundled
Realign payment terms	Standardize deposits back to 30%, drop the 10% exception for certain customers	Less cash tied up, financial cost down about 0.3%	Medium, needs case-by-case negotiation
Write the price validity period into the contract	Change quote validity from “long-term” to 60 to 90 days	No need to negotiate the next price adjustment	Low

The principle behind all three:The customer has just confirmed that “costs are rising and the increase is justified.” At this moment, putting a price on what used to be free meets far less resistance than usual— raise it on a normal day and you look petty; raise it during price-increase week and it’s just market practice.

There’s also one thing that can’t ride along:Don’t announce other bad news in the same price-increase letter——Extend the lead time, raise the MOQ, switch packaging suppliers: put any one of these in the same letter as a price increase, and the customer will pin every negative feeling on the single act of “the price increase.” One conversation, one issue. Leave other changes for at least four to six weeks, once things have settled.

9. When not to raise prices, and what to do instead

In three situations, forcing a price increase costs more than holding back.

Scenario	Test	Why not raise	Replacement move
The customer is already near your loss line	This customer’s gross margin is below 3% and has been falling for years	A price increase will most likely lose them outright, and your earlier investment is sunk	Reassess whether to keep serving them, or change the spec to cut costs
Substitutes are readily available	Three or more suppliers of the same spec on the market can replace you at any time	A price increase means losing the order, with no buffer	Cut costs internally, or differentiate the spec first and then raise prices
The order is still in its ramp-up phase	Less than 12 months of working together, and annual purchase volume below expectations	A price increase shakes the trust built during the development phase	New orders at the new price, old orders run to completion

Even when you decide to walk away, there’s no need to cut everything off at once: for old contracts that haven’t expired, don’t ask for a price change during the contract term unless the contract includes a raw material linkage clause; once fulfilled, renew at the new price, or when the customer adds an order beyond the original contract scope, negotiate the new price on the excess portion only — the moment of an add-on order is when your bargaining position is weakest, making it a natural window for a price adjustment.

Not raising prices doesn’t mean doing nothing. Do three things internally at the same time: write a raw material linkage clause into the next version of your contract template (adjust by formula when the index moves more than 5%); flag the 20% of models with the lowest gross margin for phase-out or spec changes next round; and archive the evidence for this round’s price increase that you didn’t use, so you can deploy it directly in three months if the trend continues.Missed chances to raise prices will come again, but the evidence chain has to keep running.

FAQ

How much of a price increase will customers accept?

There’s no universal number, but there are reference ranges: for stable B-class customers, a one-time 3% to 5% meets basically no resistance; 5% to 8% requires a complete evidence chain and a buffer plan; above 8%, consider splitting it. The real variable is the end-market health of the customer’s industry — if downstream is selling well, even 8% is bearable; if downstream is destocking, even 2% will trigger comparison shopping. Before setting the amount, check the customer’s inventory levels and end-market conditions.

What if the customer threatens to switch suppliers?

First judge whether it’s a bluff or a real exit. Ask three questions: how long did it take to qualify you in the first place, what tests would have to be redone to change suppliers, and will the end customer allow a material change. If switching costs 3 to 6 months, the threat is most likely a negotiating posture — you can make a small concession, but you must get an annual commitment or prepayment terms in return. If they already have an alternative and have completed samples, cap your concession at 30% of the increase; beyond that, let them go.

How far in advance should the price increase letter go out?

Segment by customer tier: Tier A key accounts get six weeks’ notice, with a meeting first and a letter after; Tier B gets three weeks, with a letter followed by a phone call; Tier C long-tail customers just need a single letter two weeks ahead. Two weeks is the floor — send the letter only one week out and customers won’t have time to adjust their purchasing plans, which easily triggers last-minute comparison shopping. At the same time, tell every customer the same effective date, so no one reads the timing gaps as a lack of transparency.

Can we raise prices for only some customers?

Yes, but it has to follow a standard, not a gut call. The usual approach is to segment by gross margin: customers above 15% gross margin see a smaller increase or none this round, while those below 8% get the full increase. Guard against two competing buyers in the same market comparing notes and discovering a price gap, so it’s best to express price differences through a combination of product version, service package, and payment terms — if two customers in the same market on the same terms differ by more than 5%, trouble is only a matter of time.

Should we adjust prices when exchange rates move?

It depends. For short orders where the gap from quote to payment is within 60 days, a 1% to 2% currency swing can be absorbed internally — no need to reprice every order. For payment terms of 90 days or more, or large orders, lock in the exchange rate basis at the time of quoting — state which day’s midpoint rate you’re using and how you’ll share the cost if it moves more than 3%. A more solid approach is to build currency risk into the quote’s validity period: the quote holds for 60 days, and if it expires you re-quote, so the swing gets absorbed automatically.

Can we raise prices on an existing contract that hasn’t expired?

Demanding a price change unilaterally during the contract term won’t hold up legally or reputationally, unless the contract has a raw material linkage clause. There are three workable paths: wait until the contract is fulfilled and renew at the new price; when the customer adds orders beyond the original contract scope, negotiate the new price for the extra volume; or negotiate a supplementary agreement and compensate them, for example with free spare parts. Don’t resort to hidden tactics like delaying delivery — that turns a commercial issue into a credibility issue.

Final thoughts

Raising prices is the move companies least want to make, and the one that most exposes the quality of their management. What it tests isn’t your pitch — it’s your foundation: whether your costs break down clearly, whether you can produce the evidence, and whether your customer tiers are well defined.If any one of those three is missing, raising prices becomes a gamble.

My recommended order of execution: first, get the cost breakdown and the evidence trail in place — this step is purely internal; then map out the communication calendar across tiers A, B, and C, and put the lead times on the schedule; finally, issue the letter using the six-part structure, and reserve the buffer tools for customers who deserve them. The whole process takes about six weeks, so you can execute calmly next quarter.

One line worth remembering: raising prices isn’t about changing a number — it’s about renegotiating every undervalued term between you and your customer during the six weeks when their attention is most focused.