GROSS. — free commercial calculators for UK FMCG brand teams

The Waterfall

Every deduction between the shelf price and your bank. Gross sales value to net net, with promo funding, back margin and other trade spend off your list price.

Every deduction between the shelf price and your bank. Gross to net net, with promo funding, back margin and other trade spend.

The workings

Gross-to-net is the paperwork version of the truth. Gross sales value is your volume at full list price — the invoice number, the one that never moves. Then the deductions start: promo funding, back margin, retro payments, range support, whatever this year's letter calls it. What is left is net sales value, and it is the only revenue number that means anything.

The convention that matters: a supplier-funded promo comes off your invoice, not the retailer's margin. They keep their percentage; you fund the price cut. Back margin is the quiet one — it never shows on a price file, but it comes off your invoice all the same. If your NSV is a mystery to you, it will not be a mystery to the buyer.

A healthy UK FMCG gross-to-net loses somewhere between 10% and 30% of invoice on the way down. Past that, you are not trading, you are donating.

The other calculators

• Home — Free commercial calculators for UK FMCG brand teams. Retailer margins, gross-to-net, trade spend payback, supp
• The Shelf — Your range, defined once. Enter each product’s cost price, RSP, units per case and rate of sale — every calcul
• The P&L — See what the retailer really makes on you. Reads top-down: shelf price, VAT, who takes what, and what you actu
• The Floor — The lowest cost price, or the RRP, that still clears your target margin. Solved backwards from the number you
• The Listing — Model the range review before the buyer does. Week by week, with a full promo calendar behind the annual GSV-t
• The Payback — How much incremental volume a promo needs to pay itself back. Break-even in cases, and the uplift that implies
• The Stock Answer — What to order, and when, before you run out. A weekly supply plan that follows your promo calendar, in whole c
• The Amazon Cut — What FBA takes before you see a penny. Every fee per unit, plus a full-year GSV-to-net P&L by cases sold.
• The TikTok Cut — What TikTok Shop takes on every sale. Every fee per unit, plus a full-year GSV-to-net P&L by cases sold.
• The Line-Up — The same product across grocery, Amazon and TikTok, side by side. The biggest channel is rarely the one that p
• The Range — The whole portfolio on one till roll. Blended margin, the SKU that carries the range, and the full-year plan.
• The Wait — Margin is an opinion; cash is a fact. When the money actually moves — and the gap your bank account has to sur
• The Ledger — One email a month on the commercial maths of UK FMCG. No selling. The archive lives here.
• The Ledger No. 001 — Your margin is your insurance. The minimum margin that survives a halved rate of sale, worked in full.
• The Guides — The long reads behind the calculators: retailer margin, gross-to-net, FBA fees and margin benchmarks, written
• How retailer margin actually works — Front margin, back margin, margin vs mark-up and the wholesaler layer — with the arithmetic shown.
• Gross-to-net: where your revenue goes — GSV, NSV, promo funding and back margin — the waterfall between invoice and bank, and what a healthy one looks
• Amazon FBA fees in the UK — Referral, fulfilment, storage and the plan, added up honestly — plus the break-even price nobody checks.
• FMCG margin benchmarks — Indicative UK brand gross-margin ranges by category, measured on the right base and honest about being ranges.
• Payment terms in UK grocery — Sixty days is not a detail — it is working capital, and it is yours. The debtor-day maths, the shelf-fill trap
• What a promotion actually costs — Funding off invoice, the uplift with the widest error bars in the building, and the payback test nobody runs.
• The Rate Card — Every default in GROSS., what it is, when it was checked and where it comes from. The maths is only as good as

Free, no sign-up. The maths is checked; the defaults are dated and sourced on The Rate Card. VAT number: not applicable. This is a website.