Vape Profit Margins, VAT and Duty: UK Retailer Guide (2026)

Vape profit margin is often confused with markup, VAT, cash received or net business profit. Those figures are related, but they are not interchangeable. A retailer can apply a high markup and still record a lower gross margin percentage; a VAT-inclusive shelf price is not all revenue; and gross product profit does not include rent, wages, utilities, losses or every payment cost. From 1 October 2026, the new Vaping Products Duty also changes the duty-paid cost of liquid-containing products entering the UK market.

This guide provides a factual calculation framework for UK retailers and wholesalers. It does not recommend a retail price, rank products or promise a return. It explains how to compare costs consistently across prefilled pod kits, replacement pods, bottled e-liquids and other vaping products, and how to manage the Vaping Products Duty transition. Tax treatment and business circumstances vary, so figures should be checked with the retailer's accountant and current HMRC guidance.

Define the figure before discussing margin

Measure	Calculation	What it shows	What it does not show
Gross profit per unit	Net selling price minus landed unit cost	Cash contribution before operating overheads	Final net profit for the business
Gross margin percentage	Gross profit divided by net selling price, multiplied by 100	The share of net sales retained before overheads	Markup on cost
Markup percentage	Gross profit divided by landed unit cost, multiplied by 100	The increase from cost to net selling price	The share of the selling price that is gross profit
Contribution after variable costs	Gross profit minus identified per-sale costs	What remains after costs such as a payment fee or allocated delivery subsidy	Profit after fixed overheads and tax
Stock return on cash	Gross profit generated over a period compared with average cash tied in stock	The effect of both unit economics and stock movement	A substitute for a complete set of accounts

Use the term "gross product margin" when the calculation stops at landed product cost. Calling it "net profit" would overstate what the figure includes.

Calculate on a VAT-exclusive basis

VAT-registered retailers normally compare VAT-exclusive sales with VAT-exclusive recoverable purchase costs. The standard UK VAT rate is currently 20% for most goods and services, according to HMRC's VAT-rate guidance. The correct treatment depends on the business and supply, so the accounting record must follow the advice applicable to that retailer.

If a consumer shelf price includes VAT at 20%, the basic conversion is:

VAT-exclusive selling price = VAT-inclusive selling price divided by 1.20.

The VAT element is the difference between the VAT-inclusive and VAT-exclusive figures. Do not calculate gross margin by subtracting an ex-VAT wholesale cost directly from a VAT-inclusive shelf price; that would treat VAT collected for HMRC as product revenue.

A worked gross-margin example

Assume a retailer buys a duty-paid vaping product for an illustrative landed cost of £5.50 excluding VAT and lists it at £9.99 including VAT. These figures are examples only, not a suggested or current market price.

Step	Calculation	Illustrative result
Convert shelf price to net sales	£9.99 / 1.20	£8.325
Gross profit per unit	£8.325 - £5.50	£2.825
Gross margin	£2.825 / £8.325 x 100	33.9%
Markup	£2.825 / £5.50 x 100	51.4%

The same transaction has a 33.9% gross margin and a 51.4% markup. Neither result is wrong; they answer different questions. Retail reports should label the measure so staff and accountants do not compare one with the other.

Convert wholesale packs to a true landed unit cost

Vape products are often bought in trade packs while sold as individual retail units. The case price must be divided by the number of saleable units, not the number of flavour lines or inner boxes. If a trade pack costs £24 excluding VAT and contains five individually saleable units, the starting unit cost is £4.80. If a retailer allocates £1 of inbound delivery to that pack, the landed unit cost becomes £5.00.

A repeatable unit-cost record can include:

• supplier invoice price excluding recoverable VAT;
• units per trade pack and trade packs per case;
• inbound delivery allocated on a consistent basis;
• import, duty or handling costs paid directly by the buyer, where applicable;
• expected non-saleable loss only where supported by actual records; and
• supplier credits that genuinely reduce the product cost.

Keep product cost separate from operating overheads. Card fees, marketplace commissions and delivery promised to the customer may be useful contribution calculations, but they should not silently alter the purchase cost in one report and remain separate in another.

Vaping Products Duty starts on 1 October 2026

HMRC is introducing Vaping Products Duty on 1 October 2026. The duty applies to vaping liquid whether or not it contains nicotine, including liquid in bottles, cartridges and pods. The rate is £2.20 per 10ml, according to the current Vaping Products Duty policy.

The duty calculation is proportional to liquid volume:

Vaping Products Duty = total liable liquid in millilitres / 10 x £2.20.

Illustrative liquid content	Duty calculation	Vaping Products Duty
2ml prefilled pod	2 / 10 x £2.20	£0.44
10ml e-liquid bottle	10 / 10 x £2.20	£2.20
2ml pod plus 10ml refill container	12 / 10 x £2.20	£2.64
20ml total liable liquid	20 / 10 x £2.20	£4.40

These examples show the duty attached to liquid volume at the point the product is released into the market. A retailer buying duty-paid stock should use the actual supplier invoice cost in its margin calculation. It should not manually add £2.20 per 10ml a second time unless the retailer is itself responsible for an activity that creates a duty liability.

Most ordinary retailers do not register for the duty

The current HMRC guidance for wholesalers and retailers states that a business which only sells or distributes duty-paid vaping products does not need approval for Vaping Products Duty or the Vaping Duty Stamps Scheme. Approval rules are different for manufacturers, importers and businesses that hold goods in duty suspension.

An ordinary retailer still needs to protect its records. After the new system starts, purchase invoices, delivery notes, supplier details, product dates and stamp checks support the legitimacy of the stock and the accuracy of the cost model.

Understand the duty-stamp transition

Period	Retailer and wholesaler position	Margin and stock-control action
Before 1 October 2026	Duty-stamped products must not be released onto the UK market	Ask suppliers how compliant stamped supply and new prices will be handled
1 October 2026 to 31 March 2027	New liable products released onto the market need a stamp; legitimate pre-1 October unstamped stock can continue to be stored and sold during the grace period	Keep evidence for any unstamped stock and separate it clearly in records
From 1 April 2027	All vaping products outside duty suspension in the UK must carry a duty stamp; unstamped stock must not be sold	Ensure old unstamped stock has been sold, returned, exported, destroyed or otherwise lawfully dealt with before the deadline

Do not merge pre-transition and post-transition costs into one unexplained average. Keep receiving batches separate enough to identify which cost and stamp status applies. This is especially important when the same flavour and model arrives at a different duty-paid cost after 1 October.

Check stamps and supplier evidence before accepting new stock

From 1 October 2026, HMRC says retailers should check that new stock carries a vaping duty stamp where required. The stamp should be on the outermost retail packaging and seal the pack. If unstamped goods are offered during the grace period, the buyer should retain enough evidence to show why a stamp is not required, such as evidence that the goods were produced or imported before 1 October 2026.

A receiving check can record:

• supplier identity and invoice number;
• product name, model, flavour or variant, nicotine strength and pack quantity;
• total liquid volume per retail unit;
• stamp present, absent under documented grace-period evidence, or not applicable;
• stamp position and packaging integrity;
• batch or lot reference and relevant production or import evidence;
• notification or product-compliance checks appropriate to the item; and
• quantity accepted, rejected or quarantined.

If the buyer is not satisfied that an unstamped product has a legitimate reason to be unstamped, HMRC guidance says it should not be bought, supplied or sold.

Build separate cost records for each product family

The wholesale vape range contains several product structures. A single average cost for "vapes" will hide material differences.

• Prefilled pod kits: record the device, included liquid containers, total liquid volume, nicotine information, retail units per trade pack and replacement-pod relationship.
• Replacement or refill pods: record the compatible model, pods or containers per retail unit, total liquid volume and flavour or variant.
• Bottled e-liquid and nicotine salts: record bottle volume, nicotine strength, bottles per trade pack and the exact product notification information.
• Hardware without liquid: keep it separate from liquid-containing products because the Vaping Products Duty is a duty on vaping liquid.
• Accessories: record normal electrical, packaging and compatibility information without assigning liquid duty where none exists.

Use separate SKU-level views for vape devices and kits, vape pods, e-liquid and vape accessories. Product pages should state current pack and variant details; this guide should not be used to infer them.

Gross margin is not enough to judge cash exposure

Two SKUs can show the same gross margin but create different financial risk. One may require a large minimum pack, have many flavour variants or face a short compliance transition. The other may be ordered in a smaller pack with a clearer replacement relationship. Margin reporting should therefore sit beside stock records, not replace them.

Useful operational measures include:

• saleable units held by SKU and variant;
• average weekly or monthly unit sales;
• weeks of cover at the recent sales rate;
• cash tied up at landed cost;
• returns, leaks, damages and write-offs;
• cost changes by supplier delivery;
• stamp status and grace-period evidence; and
• gross profit generated during the reporting period.

A slow product with an apparently acceptable margin can still hold cash and create write-down risk. That is an inventory observation, not a reason to make popularity claims or encourage consumption.

Include returns and non-saleable stock in the review

A clean unit margin assumes every purchased unit is saleable at the recorded price. Real results may be affected by leaking pods, damaged packaging, incorrect deliveries, missing variants, customer returns or stock that becomes non-compliant. Record these events against the exact SKU and supplier batch.

Do not estimate a blanket loss percentage without evidence. Start with actual events:

1. record the quantity and reason;
2. move the affected unit out of saleable stock;
3. retain evidence needed for a supplier claim;
4. record any credit received; and
5. review whether the pattern is isolated or repeated.

This keeps gross margin connected to genuine purchasing results.

Use a dated margin file during the October transition

Supplier prices may change when duty-paid product begins entering the market. Retain the effective date of every cost rather than overwriting one master number with no history. A simple margin file can hold:

• SKU and exact variant;
• supplier and invoice date;
• trade-pack cost excluding VAT;
• saleable units in the pack;
• landed unit cost;
• total liquid volume per unit;
• stamp or grace-period status;
• current VAT-inclusive shelf price;
• VAT-exclusive selling price;
• gross profit, margin and markup; and
• last review date and reviewer.

When a new cost arrives, compare it with the previous delivery and review the calculation. Do not assume that every supplier will present the duty effect in the same invoice format.

Keep price information factual and non-promotional

CAP Code section 22 allows factual information about products on a marketer's own website, but promotional treatment of nicotine-containing e-cigarettes is restricted. Current CAP guidance warns against content that goes beyond basic factual information. A trade margin guide should therefore explain calculations and compliance without ranking flavours, exaggerating demand, promising returns or presenting time-limited savings.

The Tobacco and Vapes Act 2026 is intended to bring a wider advertising and sponsorship ban into force from 1 June 2027. The government's current explanation says retail websites will still be able to provide factual, non-promotional product information. Guidance is due before implementation, so this page should be reviewed against that guidance before 1 June 2027.

Vape margin and duty checklist

• State whether a report shows gross margin, markup, contribution or net profit.
• Use VAT-exclusive sales and recoverable VAT-exclusive costs where appropriate.
• Convert every trade pack to the correct number of saleable retail units.
• Use the actual duty-paid supplier cost rather than adding Vaping Products Duty twice.
• Record total liable liquid volume for bottles, cartridges and pods.
• From 1 October 2026, check stamps on new liable stock where required.
• Keep evidence for legitimate unstamped pre-1 October stock during the grace period.
• Plan for no unstamped stock to remain outside duty suspension from 1 April 2027.
• Track returns, damages, credits and non-saleable stock by SKU.
• Keep online content factual and schedule a compliance review before 1 June 2027.

Vape profit-margin questions from retailers

Is margin the same as markup?

No. Margin divides gross profit by the net selling price. Markup divides gross profit by cost. The same product will normally show a higher markup percentage than margin percentage.

Should the VAT-inclusive shelf price be used in a margin calculation?

A VAT-registered retailer will normally compare VAT-exclusive sales and recoverable VAT-exclusive cost. At the current 20% standard rate, divide a VAT-inclusive shelf price by 1.20 to find the VAT-exclusive value. Confirm the correct treatment for the business with its accountant.

Does Vaping Products Duty apply only to nicotine liquid?

No. From 1 October 2026 it applies to vaping liquid whether or not it contains nicotine, including liquid in bottles, cartridges and pods, at £2.20 per 10ml.

Does a retailer have to register for Vaping Products Duty?

Not if the business only sells or distributes duty-paid products wholesale or retail. Manufacturers, importers and businesses handling goods under duty suspension may have different obligations and should use HMRC's impact checker and guidance.

Can old unstamped stock be sold after 1 October 2026?

Legitimate stock produced or imported before 1 October 2026 can continue to be stored and sold until 31 March 2027, but the business should retain evidence. From 1 April 2027, unstamped products outside duty suspension must not be held or sold.

Does this page recommend a target vape margin?

No. A suitable commercial decision depends on actual supplier cost, VAT position, operating costs, local conditions, stock risk and the retailer's financial plan. The purpose of the guide is to make the calculation consistent and auditable.

This guide reflects the official position checked on 10 August 2026. HMRC, advertising and product rules can change. Retailers should check current GOV.UK, MHRA and CAP material and obtain professional tax or legal advice where required.