The verdict in three sentences
For a Montreal SME processing 150,000 to 600,000 EUR per year, the right PSP is not the cheapest on paper but the one that combines a low card fee with a high authorization rate. Above 300,000 EUR of volume, negotiating 0.4 to 0.9 points of rebate is worth 1,200 to 2,700 EUR per year. The classic mistake is choosing on the headline rate without factoring in fixed fees, currency conversion, and the 2 to 4 authorization points that decide how much revenue you actually collect.
2026 fee comparison
The rates below are 2026 orders of magnitude for an SME e-commerce merchant, standard cards.
| Provider | Card fee | Fixed fee | Cross-border card |
|---|---|---|---|
| Stripe | 1.4 % | 0.25 EUR | 2.9 % + 0.25 EUR |
| Mollie | 1.8 % | 0.25 EUR | 2.9 % + 0.25 EUR |
| PayPal | 2.49 % | 0.35 EUR | 3.4 % + 0.35 EUR |
| Adyen (interchange++) | ~0.9 % + interchange | 0.11 EUR | variable |
| Bank acquirer | 1.2-1.6 % | 0.10-0.20 EUR | negotiated |
On 6,000 annual transactions at a 50 EUR average basket, i.e. 300,000 EUR of volume, the gap between Stripe at 1.4 % and PayPal at 2.49 % reaches 3,270 EUR in fees per year, excluding fixed costs.
Integration cost and timeline
Wiring a clean checkout costs more than pasting a button. Here are 2026 ranges for a careful, compliant and tested integration.
| Item | Cost | Timeline |
|---|---|---|
| Simple hosted checkout | 2,500-3,500 EUR | 1-2 weeks |
| Custom embedded checkout | 4,000-6,000 EUR | 2-4 weeks |
| Webhooks + reconciliation | 1,500-2,500 EUR | 1 week |
| End-to-end payment tests | 800-1,500 EUR | 3-5 days |
| Mobile-optimized payment page | 1,200-2,200 EUR | 1 week |
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One underestimated point: the authorization rate. Depending on the acquirer and integration quality (well-tuned 3-D Secure, smart retry), a 2 to 4 point gap is common. On 300,000 EUR of volume, 3 authorization points gained means 9,000 EUR extra collected that would have been declined elsewhere.
Mini case study
Mark, who runs a sporting-goods SME in Montreal, processes 420,000 EUR per year across 8,400 transactions. He pays PayPal at 2.49 % + 0.35 EUR, roughly 13,400 EUR in annual fees. Switching to Stripe at 1.4 % + 0.25 EUR for his standard cards (85 % of volume), his fees drop to around 8,100 EUR. Gross saving: 5,300 EUR per year. Integration cost: 5,000 EUR amortized in under 12 months, plus 2 authorization points gained, nearly 8,000 EUR of recovered sales.
FAQ
Should you always pick the lowest rate? No. A 1.4 % rate with a 92 % authorization rate earns less than a 1.8 % rate with 96 % authorization. On 300,000 EUR, those 4 points are worth 12,000 EUR more collected.
At what volume should you negotiate? From 250,000-300,000 EUR per year, most PSPs will discuss 0.2 to 0.5 points. On Adyen or interchange++, the break-even sits around 200,000 EUR per month.
How much does integration really cost? Budget 2,500 to 6,000 EUR for a full, tested and reconciled checkout, delivered in 2 to 4 weeks. No-code buttons are free but convert less well.
Is PayPal essential? It reassures some buyers but costs about 1 point more. Offering it as a second option, next to a strong card checkout, is the best compromise.
Let's scope your project. Tell us your annual volume, current PSP and e-commerce stack, and we'll quote the integration and the expected fee savings. 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.
