Ecommerce Platform Transaction Fees Compared: The Hidden Costs in 2026

Transaction Fees Are Costing You More Than You Think

Most ecommerce store owners focus on the monthly subscription price when choosing a platform. That is a mistake. For any store doing meaningful revenue, transaction fees often cost more than the subscription itself. And the way each platform structures these fees is different enough to create thousands of dollars in cost differences per year.

I have seen this play out dozens of times with my clients at E-Commerce Paradise. A store owner picks a platform based on the $39 per month price tag, then realizes six months later that they are paying an extra $200 to $500 per month in transaction fees they did not account for. That money adds up fast, and it comes straight out of your profit margin.

This guide compares the transaction fee structures across every major ecommerce platform so you can make an informed decision based on total cost, not just subscription price. If you are building a high-ticket dropshipping business, these fee differences matter even more because your order values amplify every percentage point.

How Transaction Fees Work in Ecommerce

There are two types of fees that apply to every online sale: payment processing fees and platform transaction fees.

Payment Processing Fees (Everyone Pays These)

Payment processing fees are charged by your payment gateway (Stripe, PayPal, Square, Authorize.net, etc.) for handling the actual credit card transaction. Standard rates in 2026 are 2.9% plus $0.30 per transaction for most gateways. These fees exist on every platform because someone has to facilitate the credit card transaction between your customer’s bank and yours.

You can sometimes negotiate lower processing rates at higher volumes. Most gateways consider custom pricing at $25,000 to $50,000 per month in processing volume. Rates as low as 2.4% plus $0.25 are achievable for high-volume merchants.

Platform Transaction Fees (Only Some Platforms Charge These)

Platform transaction fees are an additional percentage that your ecommerce platform takes from each sale. This is separate from and on top of payment processing fees. Not all platforms charge these, and some only charge them under certain conditions (like using a third-party payment gateway instead of the platform’s own payment system).

This is the fee that varies dramatically between platforms and creates the biggest cost differences.

Platform-by-Platform Transaction Fee Breakdown

Shopify

Shopify has a dual fee structure that depends on whether you use Shopify Payments or a third-party gateway.

With Shopify Payments (no platform transaction fee): Basic plan charges 2.9% plus $0.30 processing. Shopify plan charges 2.6% plus $0.30 processing. Advanced plan charges 2.4% plus $0.30 processing. You pay only the payment processing fee with zero additional platform fees.

With third-party gateways (additional platform transaction fee): Basic plan adds 2.0% on top of your gateway’s processing fee. Shopify plan adds 1.0%. Advanced plan adds 0.5%. Plus plan adds 0.15%.

The math matters here. On the Basic plan using a third-party gateway charging 2.9% plus $0.30, your total per-transaction cost is 4.9% plus $0.30. On a $1,500 high-ticket item, that is $73.80 in fees versus $43.80 with Shopify Payments. The $30 difference per sale adds up to thousands per year.

BigCommerce

BigCommerce charges zero platform transaction fees on all plans regardless of which payment gateway you use. This is one of BigCommerce’s strongest competitive advantages.

Payment processing through PayPal powered by Braintree (default): Standard charges 2.59% plus $0.49. Plus charges 2.35% plus $0.49. Pro charges 2.05% plus $0.49. Enterprise gets custom rates.

You can also use any other payment gateway (Stripe, Authorize.net, etc.) at their standard rates with no BigCommerce surcharge. This flexibility means you can shop around for the best processing rates and switch gateways without worrying about platform penalties.

WooCommerce

WooCommerce charges zero platform transaction fees. Since WooCommerce is open-source software you host yourself, there is no platform company taking a cut of your sales.

Your only per-transaction costs are whatever your payment gateway charges. Standard Stripe rates are 2.9% plus $0.30. PayPal standard rates are 2.9% plus $0.30. You are free to use any gateway and negotiate rates directly as your volume grows.

Squarespace

Squarespace has a transaction fee structure that catches many store owners off guard.

Business plan: 3% platform transaction fee on top of payment processing. Basic Commerce plan: 0% platform transaction fee. Advanced Commerce plan: 0% platform transaction fee.

Payment processing on all plans is through Stripe at 2.9% plus $0.30 (or PayPal at similar rates). The Business plan’s 3% surcharge means your total per-transaction cost is 5.9% plus $0.30 on a Stripe transaction. That is extremely expensive. Any store doing more than minimal sales should be on the Basic Commerce plan ($36 per month) or higher to avoid this fee.

Wix

Wix charges zero platform transaction fees on all its ecommerce plans (Business, Business Elite). Payment processing through Wix Payments follows standard rates. You can also use PayPal, Stripe, and other supported gateways with no additional platform fees.

Wix’s per-transaction processing rates: Wix Payments charges 2.9% plus $0.30 for US transactions. Third-party gateways charge their standard rates with no Wix surcharge.

Shift4Shop

Shift4Shop charges zero platform transaction fees on all plans, including the free plan. If you use the free plan, you must use Shift4 Payments at 2.9% plus $0.30. On paid plans, you can use alternative gateways without additional fees.

Ecwid

Ecwid by Lightspeed charges zero platform transaction fees on all plans, including the free plan. You pay only your payment gateway’s processing fees. Ecwid supports Stripe, PayPal, Square, and numerous other gateways.

Square Online

Square Online does not charge additional platform transaction fees. Processing through Square is 2.9% plus $0.30 on the free and Plus plans, and 2.6% plus $0.30 on the Premium plan. You must use Square for payment processing (no third-party gateway option).

Magento Open Source

Magento Open Source charges zero platform transaction fees. Like WooCommerce, it is self-hosted open-source software with no platform company taking a cut. Your costs are limited to your payment gateway’s processing fees.

Real-World Cost Comparisons

Scenario 1: $50,000 Annual Revenue, $100 Average Order Value (500 orders)

Shopify Basic with Shopify Payments: $1,600 in processing (2.9% plus $0.30 x 500). BigCommerce Standard with Braintree: $1,540 in processing (2.59% plus $0.49 x 500). Shopify Basic with third-party gateway: $2,600 in total fees (2.9% processing plus 2% platform). Squarespace Business with Stripe: $3,100 in total fees (2.9% processing plus 3% platform). WooCommerce with Stripe: $1,600 in processing (2.9% plus $0.30 x 500).

At $50K revenue, the difference between the cheapest and most expensive option is $1,560 per year. That is significant for a store at this revenue level.

Scenario 2: $200,000 Annual Revenue, $500 Average Order Value (400 orders)

Shopify Basic with Shopify Payments: $5,920 in processing. BigCommerce Plus with Braintree: $4,896 in processing. Shopify Basic with third-party gateway: $9,920 in total fees. Squarespace Business with Stripe: $11,920 in total fees. WooCommerce with Stripe: $5,920 in processing.

At $200K revenue, the spread widens to $7,024 per year between cheapest and most expensive. That is real money that directly affects your bottom line.

Scenario 3: $500,000 Annual Revenue, $1,500 Average Order Value (333 orders)

Shopify Advanced with Shopify Payments: $12,100 in processing (2.4% plus $0.30 x 333). BigCommerce Pro with Braintree: $10,414 in processing (2.05% plus $0.49 x 333). Shopify Basic with third-party gateway: $24,600 in total fees. WooCommerce with negotiated Stripe at 2.5%: $12,600 in processing.

At $500K revenue with high-ticket products, transaction fee choices create differences of over $14,000 per year. For context on building to this revenue level, check our high-ticket niches list.

The Impact on High-Ticket Products

Transaction fees hit high-ticket stores disproportionately because the percentage is applied to larger order values. Let me break this down with a single product example.

On a $2,000 sale with 2.9% processing only: you pay $58.30 in fees. On a $2,000 sale with 2.9% processing plus 2% platform fee: you pay $98.30 in fees. On a $2,000 sale with 2.9% processing plus 3% platform fee (Squarespace Business): you pay $118.30 in fees.

The difference between the cheapest and most expensive scenario is $60 per sale. If you sell 20 of these per month, the platform transaction fee alone costs you $800 to $1,200 per month extra. Over a year, that is $9,600 to $14,400 that you could invest in marketing, inventory, or straight profit.

This is why I always tell my coaching clients to either use a platform with no transaction fees or use the platform’s native payment processing to avoid them. It is one of the easiest ways to improve your margins without changing anything about your marketing or operations. Making sure your business formation tracks these costs properly is essential.

Strategies to Minimize Transaction Costs

Use Your Platform’s Native Payment System

If you are on Shopify, use Shopify Payments. If you are on Square Online, use Square. These platforms waive their transaction fees when you use their payment systems, and the processing rates are competitive with standalone gateways.

Choose a No-Fee Platform

BigCommerce, WooCommerce, and Shift4Shop never charge platform transaction fees regardless of your payment gateway choice. This gives you the freedom to use any gateway and negotiate rates without worrying about platform surcharges.

Negotiate Processing Rates at Volume

Once you are processing $25,000 or more per month, contact your payment gateway to request volume pricing. Stripe, PayPal, and Braintree all offer custom rates for higher-volume merchants. Even a 0.3% reduction saves $750 per year on $250,000 in annual sales.

Offer Multiple Payment Options Strategically

Different payment methods have different fee structures. ACH payments and bank transfers typically cost $0.50 to $1.00 per transaction (flat fee, no percentage). For high-ticket B2B sales, offering ACH as a payment option can save significant fees. Our supplier guide discusses payment strategies for both supplier and customer transactions.

Frequently Asked Questions

Why does Shopify charge transaction fees on third-party gateways?

Shopify’s business model includes earning revenue from payment processing through Shopify Payments. The third-party gateway fee incentivizes merchants to use Shopify Payments, which generates processing revenue for Shopify. It is a legitimate business strategy, but it means merchants who need third-party gateways pay a premium.

Are payment processing fees negotiable?

Yes, especially at higher volumes. Most payment processors have standard published rates for small merchants and custom pricing for merchants processing $25,000+ per month. The key is to ask. Contact your processor’s sales team and provide your monthly volume numbers. Even small rate reductions save meaningful money at scale.

Do transaction fees apply to refunds?

Platform transaction fees on refunded orders vary by platform. Most platforms do not refund their transaction fee when you issue a customer refund. Payment processing fees are also typically non-refundable (Stripe does not return the processing fee on refunds). This means a refunded $1,000 order could still cost you $30 to $50 in non-recoverable fees.

Which platform has the lowest total per-transaction cost?

For the lowest combined cost (processing plus platform fees), BigCommerce Pro with Braintree at 2.05% plus $0.49 and zero platform fees is among the most competitive. For stores that can use Shopify Payments, Shopify Advanced at 2.4% plus $0.30 with zero platform fees is also excellent. WooCommerce with negotiated Stripe rates can beat both if you have the volume to negotiate sub-2.5% rates.

Should transaction fees be the deciding factor in choosing a platform?

Transaction fees should be a major factor but not the only one. A platform with slightly higher fees but better features, support, and ease of use might save you more money through better conversion rates and less time spent on technical issues. Calculate your total cost of ownership including subscription, fees, apps, and time before making a decision.

Final Thoughts

Transaction fees are one of the most significant ongoing costs in ecommerce, and they scale directly with your revenue. The difference between a platform that charges no transaction fees and one that charges 2% to 3% on top of processing can mean $5,000 to $15,000 or more per year for growing stores.

Do the math for your specific situation. Calculate your projected annual revenue, multiply by the combined processing plus platform fee rate for each platform you are considering, and compare the totals. This simple exercise often reveals that the “cheapest” platform by subscription price is actually the most expensive when fees are included.

For help analyzing platform costs for your specific business, our coaching program includes detailed cost comparisons. Our turnkey store service sets you up on the most cost-effective platform for your niche and business model.

Join the E-Commerce Paradise community to discuss platform costs and fee strategies with other store owners.