E-commerce accountant in Paris

In e-commerce, the cash that lands in your bank account is not your real margin. Between Amazon commissions (5 to 45 % depending on category, 15 % for most), Stripe fees (1.5 % + EUR0.25 for a standard EEA card), refunds, chargebacks, Pan-European FBA fees and 3PL logistics costs, up to 30 % of gross revenue can evaporate before reaching your EBITDA.

The job of Cabinet Hayot Expertise in Paris: rebuild gross revenue channel by channel, break down every line (commission, PSP, refund, transport, ads), and produce the real net margin that drives your decisions.

They secure (1) gross revenue reconstruction channel by channel, because the Shopify, Amazon or Stripe payout is never the revenue figure, (2) the split of everything the platform withholds (commissions, payment provider fees, refunds, disputes, shipping and storage), (3) distance-selling VAT (One Stop Shop above EUR 10,000 of cumulated intra-EU sales, IOSS for imported parcels up to EUR 150, reverse charge on services invoiced from outside France), (4) the real net margin per channel, the only figure that lets you arbitrate between Shopify, a marketplace and a social channel, and (5) B2C e-reporting under the French e-invoicing reform. Public fees: e-commerce bookkeeping from EUR 550 excl. VAT per month, written consultation from EUR 450 excl. VAT (price list).

A Stripe payout is not your revenue

Stripe aggregates gross revenue, PSP fees (~1.5 % + EUR0.25 for a standard EEA card), refunds, chargebacks and dispute fees into a single bi-weekly transfer. Without a three-way reconciliation order / PSP / bank, you cannot rebuild real net revenue, true PSP fees, or actual losses. Above 500 orders/month or 2 PSPs combined (Stripe + PayPal + Klarna + Alma), manual reconciliation becomes a major accounting risk.

An Amazon Seller Central report is not a journal

A Settlement Report contains more than 30 transaction types: sales, refunds, category commissions, FBA fees (prep, ship, storage), Sponsored Products advertising fees, marketplace VAT withholding (article 14a directive 2006/112), penalties, adjustments. Each line requires the right account. An aggregated entry distorts your gross margin, and every business decision downstream.

Without 512x gateway accounts, your bank reconciliation is wrong

Cabinet Hayot Expertise opens a dedicated 512x sub-account per PSP (512100 Stripe, 512110 PayPal, 512120 Klarna, 512130 Shopify Payments, 512140 Alma) and breaks down 627 sub-accounts for bank/PSP fees.

The EUR10,000 threshold (art. 259 D CGI) and the OSS One-Stop Shop

As soon as your B2C sales to other EU countries exceed EUR10,000/year (excluding France), you must charge VAT at the destination country rate, reported either through the OSS (One-Stop Shop), which is optional, or through a VAT registration in each destination country. The threshold is cumulative across the EU, not per country. Without OSS registration or local VAT registrations, you are non-compliant in every country involved.

IOSS: imports up to EUR150 from outside the EU

The IOSS (Import One-Stop Shop) covers B2C shipments imported from outside the EU up to EUR150. Without IOSS, your EU customers pay VAT + customs clearance fees at delivery: massive cart abandonment. For a Shopify dropshipper, IOSS is essentially mandatory from month one.

Pan-European FBA: up to 5 VAT registrations

Activating Amazon's Pan-European FBA program = authorising Amazon to store your products in 5 countries (DE, FR, IT, ES, PL; the UK has been out of the programme since 1 January 2021). Direct consequence: mandatory VAT registration in each storage country, even before selling a single item there. Cabinet Hayot Expertise drives setup with EU fiscal representative partners.

Marketplace VAT withholding (art. 14a directive 2006/112)

Since 2021, certain marketplaces (Amazon, Cdiscount, eBay) act as single VAT collectors for B2C EU sales by non-EU sellers or for some domestic sales. Your CA3 return must therefore separate "VAT collected by marketplace" from "VAT collected by you". A frequent error = double-declaration or omission.

Meta Ireland / Google Ireland reverse-charge on the CA3

Your Meta (Facebook/Instagram Ads) and Google (Google Ads) invoices are issued from Ireland and subject to VAT reverse-charge. Frequently overlooked in e-commerce: fixable but visible during an audit.

See our OSS-IOSS e-commerce VAT guide 2026 for the full EU rate matrix and threshold scenarios.

Samuel Hayot is a Power User and certified Pennylane trainer. We structure the chain that runs from raw reports to net margin.

Native Pennylane connectors deployed: Shopify, Amazon Seller Central, Stripe, PayPal, Qonto, Pennylane Banking, Pennylane Invoicing.

n8n + custom API automations: for each e-commerce model, we build workflows that ingest raw reports (Amazon Settlement Reports, Stripe BalanceTransactions, Shopify Orders), break down commissions / refunds / PSP fees, and write pre-staged journal entries into Pennylane. Result: zero double entry, even above 10,000 orders/month.

For extreme marketplace volumes (>5,000 orders/month), we add A2X, Synder or Link My Books as needed.

See our Pennylane tool page for integration details.

The monthly table we deliver for each e-commerce client:

This channel-by-channel reading often reveals that a high-revenue channel actually destroys margin.

We track CAC, LTV, ROAS, MER (Marketing Efficiency Ratio), CAC Payback, Repeat Rate, AOV.

Dormant FBA stock

Amazon charges Long-Term Storage Fees (LTSF) on items stored over 241 days in FBA. Without depreciation and cut-off alerts, you pay twice: recurring storage + write-off of unsellable goods. Cabinet Hayot Expertise integrates FBA depreciation into the annual close and flags at-risk SKUs monthly.

E-commerce Cash Conversion Cycle

CCC = DSO + DIO − DPO. In e-commerce:

• DSO marketplaces: Amazon D+14, Shopify Payments D+1 to D+7, Stripe D+2 to D+7
• DIO: 60 to 180 days depending on category (fashion, beauty, food, electronics)
• DPO suppliers: critical lever (negotiating up to the legal cap of 60 days, or 45 days end of month, changes the game)

Without CCC steering, a fast-growing store can run short of cash despite positive accounting profitability. Monthly CCC calculation is part of the standard Cabinet Hayot Expertise reporting.

Calendar of the e-invoicing reform (2026-2027):

• 01/09/2026: mandatory reception of e-invoices for all FR companies
• 01/09/2027: mandatory issuance for SMEs and TPEs (already required for large companies on 01/09/2026)

For B2C e-commerce, the specifics are e-reporting: mandatory transmission to tax authorities of B2C transactions not covered by classic e-invoicing. That is exactly your Shopify / Amazon / TikTok Shop flow.

Strategic choice: approved platform (PA, formerly PDP) directly, or OD (Dematerialisation Operator) connected to an approved platform; the PPF (Public Invoicing Portal) is now limited to the directory and data-concentrator role. Cabinet Hayot Expertise sets up Pennylane as approved platform and configures automatic B2C e-reporting from your e-commerce channels.

To watch in parallel: reliable audit trail, 10-year retention of e-invoices, NF525 compliance for physical POS (if BAB retail).

French e-commerce shifts in 2026 from Search (intent: user searches a product on Google or Amazon) to Discovery (algorithm pushes the product to the user scrolling TikTok, YouTube or Instagram). Three platforms structure this new market:

• TikTok Shop France: 23 million active French TikTok users (Médiamétrie 2025), 33,000 active sellers on TikTok Shop as of March 2026 (vs 16,500 in October 2025, source TikTok / LSA Conso / Effinity), Oct-Nov 2025 GMV estimated at EUR50.5M. LIVE Shopping sessions represent 20% of sales on TikTok Shop France.
• YouTube Shopping France: open since 2024, native Shopify integration (product tags in videos / Shorts), creator monetisation via Google tracking affiliation.
• Instagram Shopping: product catalog, Reels and stories tags, Shopify Checkout redirect (native EU Checkout planned 2026-2027).

Discovery E-commerce accounting specifics: platform commissions (~5% incl. tax TikTok Shop, ~5% YouTube Shopping), creator / affiliate payouts (social status to clarify: self-employed, BNC, employee), VAT collected by platform on certain deemed supplier transactions (article 14a directive 2006/112), massive micro-transaction flows during LIVE Shopping (1,000-5,000 orders in 1-3 hours), high return rate (15-25%).

Cabinet Hayot Expertise deploys a custom n8n workflow to ingest TikTok Shop API, YouTube Analytics and Instagram exports into Pennylane (no native TikTok Shop connector in 2026), and structures per-LIVE-Shopping-session reporting. Going further: our 2026 Discovery E-commerce guide.

Adopted by the EU Council in March 2025, the VIDA Directive (VAT in the Digital Age) is the largest European VAT reform since 1993. Gradual 2026-2030 application on three pillars:

1. Digital Reporting Requirements (DRR): structured e-invoicing and near real-time cross-border e-reporting for intra-community B2B transactions (generalised 01/07/2030).
2. Platform Economy: extending "deemed supplier" status to short-term rentals (Airbnb, Booking) and passenger transport (Uber, BlaBlaCar) from 1 July 2028 (Member States may delay until 1 January 2030), in addition to the e-commerce marketplace status applied since 2021.
3. Single VAT Registration (SVR): extending the OSS one-stop-shop to new transactions (intra-community stock transfers, complex B2C sales) from 2028. Potential savings for Pan-European FBA: EUR4,000-8,000/year by reducing the number of national VAT registrations.

Cabinet Hayot Expertise action: anticipated audit of your tools (Shopify, Pennylane, EU fiscal representatives), EU flow mapping, Pennylane approved-platform setup, B2B e-invoice issuance tests in sandbox from 2026. Going further: our complete VIDA Directive 2026 breakdown and our 2026 E-commerce Compliance pillar guide.

Dive deeper: Marketplaces (Amazon FBA, TikTok Shop), Dropshipping, DNVB & E-commerce Startups.

Indicative pricing. Personalised quote within 24h after a free scoping audit.

Beauty DNVB, founded 2023, team of 5 in Paris, EUR1.8M revenue (Shopify 60 % + Amazon FBA 25 % + TikTok Shop 15 %). Before Cabinet Hayot Expertise: Shopify gross margin shown at 62 %, consolidated net margin never computed, OSS missed for 2 quarters.

After 90-day scoping: n8n automation of the 3 channels into Pennylane, structured 512x gateway accounts (Stripe / Amazon / Shop Pay), retroactive OSS regularisation, real net margin revealed at 18 % (not 35 % gross).

Business decision: shut down TikTok Shop channel (CAC > LTV at 6 months), reallocate budget to Shopify ads, renegotiate 60-day supplier DPO. Outcome 6 months later: +12 points of net margin, extended runway, Series A prepared.

Anonymised example representative of Cabinet Hayot Expertise engagements.

This structuring makes it possible, at each monthly close, to present a consolidated gross revenue figure, itemised PSP and marketplace fees, and a real cash balance. Without it, your accountant has to rebuild every single payout by hand, which is costly and error-prone.

See the FAQ section below: booking Amazon commissions in Pennylane, Pan-European FBA, Stripe flows, the EUR10,000 OSS threshold, DNVB legal structure, and pricing.

Cabinet Hayot Expertise in Paris also covers: Company formation in France, Pennylane: our certified accounting stack, OSS-IOSS e-commerce VAT guide 2026, Outsourced CFO for DNVB / startup.

Looking for an e-commerce accountant in Paris who does more than re-key your bank statements? Cabinet Hayot Expertise structures your accounting and tax set-up so that your decisions rest on accurate figures. Free 90-day scoping.