You invoiced a client in one currency, your costs landed in another, and the exchange rate moved against you. Now there is a gap between what the contract covers and what the work actually cost, and you have to ask the client to make up the difference. That is one of the most uncomfortable emails in client management, because it is not a billing error. It is a request to revisit an assumption nobody wrote down.
An email asking a client to settle a currency exchange rate shortfall has to do two things at once: recover the money and protect the relationship. Get the tone wrong and you win the argument but lose the account. Get it right and the client sees a partner managing a shared risk, not a vendor passing along a problem.
The templates below are built around wording, because in this conversation the wording is the negotiation.
Why Does Tone Decide Whether a Client Pays a Currency Shortfall?
A currency shortfall request lands differently than a normal invoice. The client already paid what they believed was the agreed amount. Your email tells them the agreement was incomplete, and that is a uncomfortable position to put someone in.
Most clients react to that discomfort in one of two ways. If the tone feels collaborative, they treat it as a shared business problem and look for a solution. If the tone feels accusatory or transactional, they shift into contract-defense mode and stop listening to the explanation.
Three tone choices carry most of the weight:
- Use we-language instead of you-language. "We are seeing a gap between the invoiced amount and our costs" is collaborative. "You underpaid because of the exchange rate" is an accusation.
- Frame it as a shared risk, not a penalty. Currency movement is nobody's fault. Presenting it as a market event both sides are exposed to keeps the conversation neutral.
- Ask for a conversation before you ask for money. The first email should propose a review, not demand a payment. Clients respond to the second email far better once the first one has been acknowledged.
If the client is long-standing and the amount is small, consider whether the request is worth the relationship cost at all. A shortfall that is immaterial to your margin is usually better absorbed than recovered, and the goodwill is worth more than the difference.
Common Wording Mistakes That Turn a Request Into a Dispute
These are the phrasing choices that convert a recoverable shortfall into a relationship problem, a legal review, or an unpaid invoice.
- Using the word "owe." "You owe the difference" reads as a demand. "There is a remaining balance of [Amount]" reads as a statement of fact.
- Blaming the client's currency. "Your currency devalued against ours" makes the client feel penalized for something outside their control. Describe the movement, not the culprit.
- Saying you are passing on costs. That phrase signals that the client is absorbing your problem. Frame it as a shared exposure instead.
- Referring to an undocumented conversation. "As we discussed" without a written record invites a dispute. If a conversation happened, summarize what was agreed in the email.
- Threatening to pause work. Any hint of withholding services turns a billing conversation into a leverage fight, and clients escalate immediately.
- Copying finance or legal too early. Adding senior stakeholders before the client's account manager has a chance to respond makes the email feel like an escalation.
- Using unexplained jargon. Terms like FX exposure, hedging, and settlement variance mean different things to different people. Plain language avoids confusion.
- Asking retroactively for many months at once. A single large catch-up request feels like a penalty. Handle each period separately or propose a forward-looking fix.
- Omitting the calculation. If the client cannot see how the number was derived, they cannot approve it. Include the rate used, the rate applied, and the difference.
- Making the request emotional. "We have been absorbing this for months and it is becoming unsustainable" puts the client on the defensive. State the facts and the proposal.
Email Templates for Every Client Relationship
Use the first template when the relationship is strong and the shortfall is modest. Use the second when the amount is material or the contract provides a mechanism. Use the third when the client has not responded or has pushed back.
Option 1: Soft and Relational
Subject line options:
- Currency Adjustment on Invoice [Invoice Number] – Quick Note
- Reviewing a Small Currency Gap on [Project Name]
- Currency Movement on [Invoice Number] – Request for a Conversation
Hi [Recipient Name],
Hope things are going well on your side. I'm writing about a small
currency gap on invoice [Invoice Number] and wanted to raise it with
you directly before it becomes a formal adjustment.
What happened:
Invoice amount: [Amount] [Currency]
Exchange rate at
contract signing: [Rate]
Exchange rate at
settlement: [Rate]
Shortfall: [Amount] [Currency]
This isn't a billing error and it's not a penalty. It's a market
movement that we've been absorbing on [Project Name], and I wanted to
see if we can find a fair way to handle it together.
A few options I'd be open to:
- Split the difference: [Amount] from each side
- Apply the adjustment to the next invoice instead of this one
- Agree on a fixed exchange rate for the remainder of the engagement
so this doesn't come up again
I'd rather solve this in a quick call than trade emails. Would
[Timeframe] work for fifteen minutes?
Thanks,
[Your Name]
[Your Title]
[Company Name]Option 2: Firm and Contractual
Subject line options:
- Currency Adjustment Request per Section [X] of [Contract Reference]
- Settlement Shortfall on Invoice [Invoice Number] – [Amount]
- Formal Request: Currency Exchange Rate Adjustment on [Project Name]
Hi [Recipient Name],
I'm writing to request settlement of a currency exchange rate
shortfall on invoice [Invoice Number], in line with [Contract
Reference, Section X] which provides for adjustment when movement
exceeds [Percentage].
The calculation:
Contract currency: [Currency A]
Settlement currency: [Currency B]
Rate at contract
effective date: [Rate]
Rate at invoice
settlement date: [Rate]
Variance: [Percentage]
Shortfall: [Amount] [Currency A]
Supporting documentation:
- Invoice [Invoice Number] dated [Date]
- Exchange rate source: [Source]
- Contract clause reference: [Section X]
We've absorbed smaller movements on this engagement without
escalating, but this variance exceeds the threshold we agreed to.
I'd like to resolve it before it affects the next billing cycle.
Requested action:
- Settle the shortfall of [Amount] by [Date], or
- Apply the adjustment to invoice [Next Invoice Number], or
- Agree on a revised rate for the remaining term
Could you confirm which option works for you by [Date]?
Thanks,
[Your Name]
[Your Title]
[Company Name]Option 3: Follow-Up or Escalation
Subject line options:
- Following Up: Currency Adjustment on Invoice [Invoice Number]
- Second Request – Currency Exchange Rate Shortfall on [Project Name]
- Currency Adjustment – Decision Needed Before [Timeframe]
Hi [Recipient Name],
Following up on my note from [Date] about the currency exchange rate
shortfall on invoice [Invoice Number]. I haven't received a response
yet, so I want to make sure this stays on the radar.
Quick recap:
Shortfall: [Amount] [Currency]
Cause: Exchange rate movement between contract and
settlement
Original ask: [Split the difference / adjust next invoice /
revise rate]
Status: No response
I understand this may need internal review on your side. If it does,
let me know who to follow up with and I'll reach out directly. If
the adjustment isn't possible, that's a workable answer too. I just
need to know so I can plan the next billing cycle.
Could you confirm by [Date] either way?
Thanks,
[Your Name]
[Your Title]
[Company Name]Send Your Request When the Numbers Are Still Fresh
Timing shapes how the request is received. A shortfall raised immediately reads as careful contract management. The same shortfall raised months later reads as a retrospective penalty.
- Send as soon as the variance appears. Ideally within the same billing cycle as the invoice, before the client closes their books on the period.
- Bundle it with the next invoice if possible. A currency adjustment line on a normal invoice is easier to process than a separate request.
- Avoid the final days of a quarter or fiscal year. Finance teams are closing the period and have no appetite for adjustments that require approval.
- Send on a Tuesday or Wednesday morning. Monday inboxes bury requests, and Friday afternoon emails get read the following week with the urgency drained out.
- Account for the client's time zone. If the client is in a different region, schedule the send so it arrives at the start of their working day, not overnight.
- Set a follow-up date before you send. Decide in advance when you will follow up if there is no response, and hold to it.
If the shortfall is recurring, the better move is to propose a forward-looking mechanism rather than chase the difference each period. A fixed rate, a quarterly true-up, or a threshold clause removes the need for this conversation entirely.
What To Do When the Client Pushes Back
Pushback is normal and it is not the end of the conversation. Most objections fall into a small number of categories, and each one has a workable response.
- "We paid the agreed amount." Acknowledge that they did. Then explain that the contract amount assumed a rate that has since moved, and ask to review the calculation together.
- "This is your problem, not ours." Do not argue. Offer to split the difference or to apply a forward-looking clause instead, which shifts the conversation from blame to structure.
- "We need to check with finance." Provide the calculation, the source of the rates, and a deadline. Make it easy for the internal reviewer to say yes.
- "We can't approve this." Ask whether a partial settlement or a credit against future work is possible. A reduced recovery preserves the relationship better than a full write-off or a full demand.
- Silence. Follow up once on the same thread, then escalate internally. Decide in advance whether you will write off the amount or pursue it further, because chasing a small shortfall can cost more in goodwill than it recovers.
Whatever the outcome, get it in writing. If the client agrees to a split, confirm the amount and the date. If they refuse, note the decision so the same shortfall is not raised again next cycle.
Frequently Asked Questions
Q: How do I ask a client to pay a currency exchange rate shortfall?
A: Raise it as a shared business issue rather than a billing error. State the amount, show the calculation, offer two or three ways to resolve it, and ask for a conversation before requesting payment.
Q: What should I include in an email about currency exchange rate shortfalls?
A: Include the invoice number, the contract rate, the settlement rate, the resulting shortfall, the source of the rates, and a proposed resolution such as splitting the difference or applying the adjustment to the next invoice.
Q: How do I word a currency adjustment request without damaging the client relationship?
A: Use we-language, avoid the word owe, and frame the movement as a market event rather than a client mistake. Offer options instead of a demand, and ask for a call before asking for payment.
Q: What if the client refuses to pay the currency exchange shortfall?
A: Ask whether a partial settlement or a credit against future work is possible. If the client still refuses, get the decision in writing and consider whether the amount is worth pursuing further.
Q: When should I send a currency shortfall request to a client?
A: Send it within the same billing cycle as the invoice, before the client closes their books on the period. Avoid the final days of a quarter or fiscal year, and send mid-week during the client's working hours.