Building a 12-Month US P&L: Why Your Home-Market CAC Won't Work

A US P&L target for EU brands starts with one rule: rebuild the model line by line with US inputs, and carry no home-market assumption across unchanged. Six lines need new numbers. Customer acquisition cost (CAC) usually does the most damage, because it runs 2-4x higher than in your strongest European market.

This is the third item on the Strategy & Channel list in our EU to US Expansion Checklist: set a 12-month US P&L target using US CAC assumptions. The rest of this post shows how to build it.

What belongs in a US P&L target for EU brands?

A US P&L target is a month-by-month model of your first year of US sales, built from US costs and US customer behavior. Start from your home-market model and replace each input that changes. The table shows the six lines that usually do.

Lines that stay the same, such as product cost, can carry over. Check each one before you assume it does.

Why won't your home-market CAC work in the US?

Your home CAC reflects years of brand awareness, reviews, repeat buyers, and word of mouth. A US customer has none of that context. You pay to build it with each new customer, and the media costs more.

Our EU to US Expansion Guide puts CPCs in most categories at 2-4x your strongest home-market equivalents. If your CAC-to-LTV ratio is already tight at home, plan for it to compress further before it improves.

Use your single strongest market's CAC as the base, since a blended European average would understate what you need to plan for. Our post on why strength in one EU market doesn't mean Europe-wide demand explains the reasoning.

How should a brand build its first 12-month US P&L?

Work through these steps in order, and keep a home-market column beside the US column so you can see what moved.

Step 1: Start from your strongest market's per-order economics

Pull average order value, product cost, shipping cost, return rate, and CAC for your strongest single country. This is your baseline column. If you cannot produce these numbers by country, fix that first, because every later step depends on them.

Step 2: Put revenue on a like-for-like basis

EU shoppers see prices with VAT included. US shoppers see the price before sales tax, and tax is added at checkout. Take VAT out of your home-market revenue, then decide your US price from there, in dollars.

Model currency movement as well. A move in the euro-dollar rate changes the margin on every order, so add a simple sensitivity case. Sales tax collection is a compliance task that sits alongside the P&L.

Step 3: Replace CAC with a 2-4x range

Run the model three times, at 2x, 3x, and 4x your home CAC. Treat the range as the planning assumption until your own US test produces real data.

Step 4: Replace shipping with US carrier quotes

Get quotes for your actual parcel size and destinations, because zone and weight drive cost. Carrier prices have also moved. UPS and FedEx each announced average 2026 general rate increases of 5.9% (opens in new tab), with residential and delivery-area surcharges rising by roughly 6-8%.

Model both paths: cross-border parcels from Europe while you test, and a US fulfillment node once volume justifies one.

Step 5: Replace your return rate with a US one

The National Retail Federation and Happy Returns put the 2025 US return rate at 15.8% of sales overall and 19.3% for online sales (opens in new tab). Use your category's rate if you know it, and the online figure as a floor for planning if you do not.

Step 6: Add duties, import costs, and one-time setup

Duties belong in the model as their own line. The rules have shifted repeatedly this year: the Supreme Court struck down the IEEPA tariffs in February 2026, and the 10% Section 122 replacement tariff has since expired (opens in new tab). Model a low, base, and high duty case, and ask a customs broker to confirm the current rate for your product's tariff classification.

Small parcels face change too. A June 2026 CBP rule suspends the de minimis exemption indefinitely for postal shipments (opens in new tab), so budget for duties on test parcels.

Then add one-time costs: entity structure, a USPTO trademark filing, a US accountant or counsel, and compliance work. Get quotes from your advisers, since these vary widely.

Step 7: Set the 12-month target month by month

Treat months 1 to 6 as structured testing, because our guide recommends at least six months before you draw conclusions. Set targets for learning in that window, such as CAC, conversion, and return rate. Set revenue and margin targets for months 7 to 12, once you have tested data.

Build the cash view too. Inventory in transit, duties paid on arrival, and ad spend all land before the revenue does.

What does a US P&L look like next to a home-market one?

Here is a hypothetical example, built only to show how the lines interact. Every figure is an illustrative assumption, so replace them with yours.

The assumptions, per 100 orders at $100 average order value: product cost of $35 per kept order, a home return rate of 8% against a US rate of 19%, outbound shipping of $12 at home and $16 in the US, return handling of $12 at home and $20 in the US, a 10% duty on product cost for US orders, and a home CAC of $25.

The margin before CAC falls by about 37%, from $46.84 to $29.35, before acquisition cost enters the picture. Then CAC doubles or more. A model that worked at home with a profitable first order now needs repeat purchases to pay for acquisition.

That is the point of the exercise. At 2x, each customer must order about 1.7 times to break even. At 4x, it takes about 3.4, which is the CAC-to-LTV stress test our guide recommends before you scale paid spend. If your repeat rate cannot support that number, adjust price, product mix, or channel first.

Frequently asked questions

How long should a US P&L target cover?

Twelve months, built month by month. The first six months should be structured testing, with targets for learning, and months 7 to 12 carry revenue and margin goals based on what the test showed.

What CAC multiplier should I use for the US?

Use your strongest single home market's CAC at 2-4x, and run the model at each point in the range. Replace the range with your own US data once your test produces enough of it.

Should I use US return rates or my home-market return rate?

Use US rates. NRF and Happy Returns put 2025 US returns at 15.8% of sales overall and 19.3% online. If your category's rate is known, use it, and add return shipping and handling to the cost.

Do I include tariffs and duties if the rules keep changing?

Yes, as their own line, modeled as a low, base, and high case. Confirm the current rate for your product with a customs broker before you commit inventory, and re-check it before each shipment plan.

What should you do next?

Download the EU to US Expansion Checklist (opens in new tab) and work through the Strategy & Channel list, including this item. Then read the Customer Acquisition Cost & Unit Economics section of the EU to US Expansion Guide to pressure-test your numbers.