The verdict in three sentences
For an Amsterdam SME delivering office supplies and consumables to businesses, a subscription e-commerce site costs between EUR 20,000 and 45,000 excl. VAT and ships in 3 to 4 months. The main financial lever is SEPA Direct Debit, billed at EUR 0.35 to 0.80 per transaction versus 1.5% + EUR 0.25 per card, which changes everything on recurring baskets of EUR 150 to 600. The project pays off if monthly churn stays under 3%, which means getting pauses, plan changes and failed-payment recovery right.
What the subscription platform costs in 2026
A B2B subscription is not a classic store with an "order every month" button. You need a recurring billing engine, a customer portal where the office manager adjusts quantities, SEPA mandate management and proration logic when a customer changes plan mid-month. Here are 2026 ballpark figures for an SME with 10 to 50 employees.
| Component | 2026 range (excl. VAT) | Comment |
|---|---|---|
| Catalogue and plans (3 to 5 tiers) | EUR 3,000 to 6,000 | Monthly box, quantities adjustable per desk |
| Recurring billing engine | EUR 5,000 to 12,000 | Stripe Billing, GoCardless or Chargebee integrated |
| Customer portal (pause, change, cancel) | EUR 4,000 to 9,000 | Proration, history, PDF invoices |
| SEPA mandates and dunning | EUR 2,500 to 6,000 | Automatic retry D+3, D+7, email and SMS |
| ERP or accounting connection | EUR 3,000 to 8,000 | Journal export, bank reconciliation |
| MRR and churn dashboard | EUR 2,500 to 4,000 | MRR, ARPA, churn, LTV per segment |
| Total project | EUR 20,000 to 45,000 | 3 to 4 months |
The low end matches a Shopify or WooCommerce site with a subscription app. The high end matches custom development with specific business rules (fortnightly deliveries, quantities per site, centralised billing for multi-site groups).
SEPA or card: the payment fee trade-off
On a B2B subscription, the payment method weighs heavily on margin. Dutch businesses readily accept direct debit (incasso), and the SEPA B2B mandate also reduces dispute risk compared with the Core mandate.
| Criterion | SEPA Direct Debit | Card |
|---|---|---|
| Fee per transaction | EUR 0.35 to 0.80 flat | 1.5% + EUR 0.25 |
| Fee on a EUR 300 basket | EUR 0.35 to 0.80 | EUR 4.75 |
| Annual fees, 200 customers at EUR 300/month | EUR 840 to 1,920 | EUR 11,400 |
| Average failure rate | 1 to 2% | 3 to 6% (expired cards) |
| Settlement time | 2 to 5 business days | 2 to 7 days depending on PSP |
| Dispute window | 8 weeks (Core), none (B2B) | Up to 13 months |
Best practice is to offer SEPA by default and cards as an option for small accounts, with a 2% discount on direct debit to steer the choice.
Managing churn: pauses, plan changes and dunning
Monthly churn is the metric that decides profitability. A 3% rate means losing about 31% of customers over a year; at 6%, you lose more than half. Three features measurably reduce it: the pause (one month without delivery during the summer holidays instead of a cancellation), self-service plan changes, and smart retries of failed payments, which recover 40 to 60% of failed charges. Also plan a cancellation flow that offers an alternative (smaller plan, bimonthly delivery) before confirming the exit.
Mini case study
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Sanne, founder of an office supplies SME in Amsterdam-Noord, serves 220 businesses with one-off orders and an average basket of EUR 280. She converts 60% of her customers to a EUR 290/month subscription: 132 subscribers and EUR 38,280 of MRR. Project: EUR 32,000 excl. VAT. Switching to SEPA at EUR 0.50 per transaction instead of cards saves about EUR 4.60 per charge, or EUR 7,290 per year. With 2.5% churn instead of the 8% lost repeat purchases seen with one-off orders, she keeps an average of 7 more customers per month, roughly EUR 2,000 of protected MRR. Payback lands around 12 to 14 months.
FAQ
How long does it take to launch subscription e-commerce?
Allow 3 to 4 months for a complete project, including 3 to 4 weeks of scoping plans and billing rules. A Shopify version with a subscription app can go live in 6 to 8 weeks, with less flexibility.
Should I use a SEPA B2B or Core mandate?
The B2B mandate removes the 8-week refund right and secures your cash flow, but the customer's bank must register it. Many SMEs start with Core and move large accounts, above EUR 500 per month, to B2B.
What churn should an office supplies subscription target?
Aim for under 3% per month in year one, then 1.5 to 2% once dunning and pauses are in place. Above 5%, acquisition costs are usually not recovered.
How much does maintenance cost after launch?
Budget EUR 300 to 900 excl. VAT per month for maintenance, plus the billing engine subscription, 0 to 0.8% of processed volume depending on the tool.
Can we keep one-off orders alongside subscriptions?
Yes, and it is recommended: 20 to 30% of customers prefer to keep ordering per unit, and one-off orders act as an entry point to the subscription.
Let's scope your project. Send us your planned plans, customer volume and accounting tool: we will price the subscription platform, SEPA setup and a 3 to 4 month schedule. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
