A proposal does the same job in both markets: it turns a conversation into a decision. What changes is the shape of the document, the order of the argument and the amount of certainty a reader expects to see on the pricing page.
Get this wrong and nothing looks obviously broken. The proposal is just slightly harder to approve. That is the most expensive kind of mistake, because nobody tells you why they went quiet.
The same document, with different centres of gravity
UK buyers read a proposal looking for evidence that you understand the problem and will not be difficult to manage. US buyers read a proposal looking for evidence that the outcome is worth the money and that the risk is bounded. Both want competence; they weigh it differently.
In practice that means a UK proposal earns trust earlier with a clear scope, a named team and a stated process. A US proposal earns it earlier with a quantified outcome, a short proof section and an unambiguous price.
| Element | UK expectation | US expectation |
|---|---|---|
| Opening | Restate the brief and show you understood it | Lead with the result and the number |
| Tone | Understated; let the work speak | Confident; name the benefit explicitly |
| Length | 6–12 pages is normal; appendices for detail | 3–8 pages, with a one-page executive summary that stands alone |
| Pricing | Fixed fee, ex VAT, with VAT shown | Fixed fee, tax-exclusive, with a note on applicable state tax |
| Payment | 30 days from invoice is standard; deposits common on projects | Net 30 in larger firms, card or milestone billing in smaller ones |
| Legal framing | Terms implied by the proposal, contract to follow | Terms attached, or a signature block that binds |
| Proof | Relevant case study, one or two references | Metrics, logos, testimonial with a job title |
| Validity | 30 days is normal | 14–30 days, often stated as a date |
| Signature | Often just acceptance by email | Frequently an e-signature on the document |
A structure that works in both markets
If you write one proposal and send it to both, this order travels well:
- One-page summary. The problem in two sentences, the outcome, the price, the start date. A US reader stops here if it is not clear; a UK reader uses it to brief a colleague.
- The situation, in the client's words. Quote their brief back. This is the section that earns credibility in the UK and is often skipped in the US — keep it to half a page.
- What we will do. Deliverables, sequence, who does what. Dates, not durations, wherever a date is knowable.
- Evidence. One case study with a number in it. Not three.
- Price and options. One recommended option, at most two alternatives.
- Terms. What is included, what is not, change control, payment, validity.
- Next step. One action, with a date.
Pricing across the two markets
UK proposals normally quote a fixed fee excluding VAT, then state the VAT separately. Buyers are used to this and will compare you on the ex-VAT figure, so the inclusive total should still be visible — otherwise a procurement team discovers a 20% difference at the wrong moment.
US proposals quote a fee excluding sales tax, and whether tax applies depends on the state and on what is being sold. Services are treated differently from products in most states, and digital deliverables vary. State the position rather than leaving a blank: fees exclude applicable state and local sales tax is enough.
For digital products sold into the US, the threshold question is whether you have a tax obligation in a state at all. US sales tax nexus for digital products explains the economic nexus rules that now apply to small sellers.
Three pricing habits reduce friction in both markets:
- Anchor on the deliverable, not the hour. Hourly pricing invites a comparison you cannot win, and it punishes you for being fast.
- Show one recommended option. Three equal options produce a decision the client cannot make. One recommendation plus one cheaper, narrower alternative works.
- Price the change. State a day rate for work outside scope. Without it, every small request becomes a negotiation.
The paperwork that trips up cross-border work
A UK supplier invoicing a US client will be asked for a W-8BEN (individual) or W-8BEN-E (company) before the first payment, because the client needs it to avoid withholding. Have it ready; waiting three weeks for a form makes you look new.
A US supplier invoicing a UK client may be asked for a VAT number, and will usually find that the reverse charge applies to business-to-business services — the invoice shows no UK VAT and the client accounts for it. UK clients also expect a purchase order number to appear on the invoice, and many will not pay without one.
Two documents are worth preparing once and reusing:
- A one-page terms sheet covering payment, IP ownership, confidentiality and termination. Attach it rather than rewriting it per proposal.
- A capability statement with three referenceable clients, in the client's market. References that cannot be contacted from the buyer's time zone are worth less than they cost to write.
Translating UK prose into US prose
If you are adapting an existing proposal rather than writing a new one, these five edits do most of the work:
- Move the outcome into the first paragraph. UK drafts often open with context that US readers treat as delay.
- Replace hedges with commitments. "We would aim to deliver" becomes "we deliver by 14 March".
- Put a number in the case study. A US reader scans for the metric and assumes there isn't one if it is absent.
- Switch the spelling and the date format. The converter handles the spelling; rewrite the dates by hand.
- Add a signature block. A proposal that can be signed closes faster than one that needs a contract to be drafted first.
Going the other way — a US proposal for a UK buyer — reverse each of these. Cut the superlatives, add a paragraph on how the work will be managed, and state the VAT position plainly.
What UK buyers notice that US buyers do not
- Whether you name a person who will actually do the work.
- Whether the process sounds like it has been run before, or invented for this pitch.
- Whether the price includes VAT, and what happens when scope moves.
- Whether the references are in the same sector and the same country.
And the reverse:
What US buyers notice that UK buyers do not
- Whether the executive summary works without reading anything else.
- Whether there is a number attached to the promised outcome.
- Whether the contract is included and signable.
- Whether you have worked with a company they have heard of.
Checklist before you send
- The variant matches the buyer's market, throughout, including the file name.
- Dates written with the month as a word, and the year included.
- Currency and tax treatment stated on the price page.
- Payment terms, validity date and the change-rate included.
- One case study with one number, from the buyer's market if possible.
- A named next step with a date attached to it.
- W-8BEN-E or VAT details ready if the invoice crosses a border.
If the proposal is going to a public body rather than a company, most of this still applies but the format is dictated by the tender — writing a service page covers the productised version of the same argument, and contracts for small business covers what to attach.
