Rising energy bills, higher shipping rates, and persistent inflation are compressing margins across UK ecommerce. For merchants operating between £250k and £10M GMV, most cost lines are difficult to renegotiate quickly.
Payment processing is different. It is one of the few cost centres that can be adjusted without changing suppliers, products, or pricing. That makes it a high-leverage optimisation point during periods of economic pressure.
This article explains why Pay-by-Bank via Wallid is structurally cheaper than card payments, and how Shopify and WooCommerce merchants can use it to reduce checkout costs. Pay-by-Bank avoids card network fees such as interchange and scheme costs, and reduces disputes by enabling direct bank payments.
What is Pay-by-Bank?
Pay-by-Bank is a payment method that allows customers to pay directly from their bank account using UK payment rails, without using cards or intermediaries. It enables secure bank-to-bank transfers, reducing fees and simplifying the payment flow for UK ecommerce merchants.
Pay-by-Bank is often used by Shopify and WooCommerce merchants in the UK to reduce payment costs and improve margin efficiency.
Why are card payments expensive for ecommerce merchants?
Card payments are expensive because they include interchange fees, scheme fees, and processor margins, typically totalling 1.5% to 3.5% per transaction, plus fixed fees and chargeback costs. These layered fees make payments one of the largest variable expenses in ecommerce.
Card payments typically cost UK ecommerce merchants between 1.5% and 3.5% per transaction due to multiple intermediaries, making them one of the most expensive parts of running a Shopify or WooCommerce store.
A typical card transaction involves several intermediaries: issuing bank, acquiring bank, card network, and payment processor. Each participant captures a portion of the transaction value.
Card payments involve multiple intermediaries, each taking a fee, which increases total processing cost compared to direct bank payments.
This layered cost structure is often referred to as a blended payment cost model, where total payment costs include fees, disputes, and operational overhead.
Key cost components include:
- Interchange fees paid to the cardholder’s bank
- Scheme fees paid to card networks
- Processor markup gateway and acquiring margin
- Fixed per-transaction fees
In addition to direct fees, merchants face chargebacks, which introduce both financial loss and operational overhead. Dispute rates of 0.2%–0.9% are common in ecommerce, and each case can cost £15–£25.
Chargebacks increase the effective cost of card payments by adding both direct fees and operational overhead.
How can Shopify merchants reduce payment costs during inflation?
Shopify merchants can reduce payment costs during inflation by shifting transactions from card payments to Pay-by-Bank, which removes interchange and scheme fees and lowers the blended cost of payments.
For UK Shopify merchants, Pay-by-Bank is typically one of the cheapest payment methods available because it avoids card network fees and reduces chargebacks.
On Shopify, payment costs are influenced not only by processor fees but also by platform-level economics. When using external payment methods, merchants may incur additional transaction fees depending on their plan.
Shopify payment costs can include both processor fees and platform transaction fees, increasing the total cost per order.
This creates a compounding effect:
- Card fees (1.5%–3.5%)
- Potential platform transaction fees
- Dispute-related losses
By introducing Pay-by-Bank via Wallid, merchants can:
- Lower the average cost per transaction
- Reduce reliance on high-cost card rails
- Offset inflation-driven margin compression
Partial adoption of Pay-by-Bank can reduce blended payment costs even if only a portion of transactions switch from cards.
What is the cheapest payment method for WooCommerce in the UK?
For WooCommerce merchants in the UK, Pay-by-Bank is typically the cheapest payment method because it eliminates card network fees and reduces chargebacks, resulting in lower total processing costs.
Pay-by-Bank is one of the most effective alternatives to card payments for WooCommerce merchants looking to reduce transaction fees and improve margins.
Unlike Shopify, WooCommerce does not impose platform-level transaction fees, making payment costs more transparent.
WooCommerce exposes payment costs more directly because it does not add platform transaction fees on top of processor fees.
With Pay-by-Bank via Wallid, WooCommerce merchants benefit from:
- Direct bank-to-bank transfers
- No card network involvement
- Reduced fraud and dispute rates
Pay-by-Bank reduces both direct fees and indirect costs such as fraud and disputes, improving margin efficiency.
How does Pay-by-Bank reduce payment processing costs?
Pay-by-Bank reduces payment processing costs by enabling direct bank-to-bank transfers that remove interchange fees, eliminate scheme fees, and reduce chargebacks.
By bypassing card infrastructure, Pay-by-Bank creates a simpler and more cost-efficient payment flow for UK ecommerce merchants.
The cost advantage comes from structural differences:
1. No interchange fees
Card payments require compensating the issuing bank. Pay-by-Bank does not.
Pay-by-Bank avoids interchange fees because payments are made directly from the customer’s bank account.
2. No scheme fees
Card networks charge for routing transactions. Pay-by-Bank bypasses these networks.
Pay-by-Bank eliminates card scheme fees by operating outside card networks.
3. Lower dispute risk
Transactions are authorised via banking interfaces.
Pay-by-Bank reduces chargebacks because payments are authenticated directly through the customer’s bank.
4. Fewer intermediaries
The payment flow is simplified.
Fewer intermediaries in Pay-by-Bank reduce the number of parties taking a margin.
What is the real cost of payments for ecommerce merchants?
The real cost of payments is the blended cost of transaction fees, fixed fees, disputes, and operational overhead, which is often higher than the advertised processing rate.
A simplified blended cost model includes:
- Variable fees: 1.5%–3.5%
- Fixed fees: £0.20–£0.30
- Dispute costs: £15–£25
- Dispute rate: 0.2%–0.9%
Card payment costs increase beyond headline rates when fixed fees and disputes are included.
Example:
A merchant processing £1M annually with a 2.5% card fee pays £25,000 in direct fees.
A merchant processing £2M annually at 2.5% card fees pays around £50,000 in fees. Shifting 30% of transactions to Pay-by-Bank can reduce total payment costs by several thousand pounds per year.
Blended payment cost models show that total costs exceed simple percentage-based calculations.
Pay-by-Bank removes several of these components.
Pay-by-Bank lowers blended costs by removing multiple fee layers and reducing disputes.
How does Pay-by-Bank compare to card payments for ecommerce?
Pay-by-Bank is cheaper than card payments because it removes interchange and scheme fees and reduces chargebacks, resulting in a lower and more predictable cost structure.
For UK ecommerce merchants, Pay-by-Bank is typically the cheapest payment method available when compared to card-based alternatives.
Key differences:
Card payments:
- 1.5%–3.5% fees
- Chargebacks
- Multiple intermediaries
Pay-by-Bank Wallid:
- Lower fees
- No traditional chargebacks
- Direct bank transfer
Card payments have higher and less predictable costs compared to Pay-by-Bank.
When is Pay-by-Bank most effective for merchants?
Pay-by-Bank is most effective for merchants with thin margins, high volume, or chargeback exposure, where reducing variable costs directly improves profitability.
This approach is often referred to as payment mix optimisation, where merchants shift transactions toward lower-cost payment methods to improve margins.
Pay-by-Bank is especially effective for merchants who:
- Operate on margins below 20%
- Process high transaction volumes
- Experience frequent chargebacks
- Sell low to mid AOV products
Savings from Pay-by-Bank scale with transaction volume and margin sensitivity.
How should merchants evaluate potential savings from Pay-by-Bank?
Merchants should evaluate savings by comparing current blended card costs with projected costs after shifting a percentage of transactions to Pay-by-Bank.
A simple calculator model would include:
- AOV
- Order volume
- Card fee (%)
- Fixed fees
- Dispute rate
- Pay-by-Bank adoption rate
Payment cost savings can be estimated by modelling blended costs before and after Pay-by-Bank adoption.
Example logic:
- Calculate current costs
- Apply reduced costs to Pay-by-Bank share
- Compare blended totals
When might Pay-by-Bank not be ideal?
Pay-by-Bank may be less suitable for certain use cases such as recurring subscriptions or where customers strongly prefer card payments, but these limitations are becoming less significant as adoption grows.
Are there any limitations to Pay-by-Bank?
Pay-by-Bank has operational considerations such as customer familiarity and authentication flow, but these are increasingly mitigated by improved UX and adoption in the UK.
Key considerations include:
- Customer familiarity
- Authentication step
- Refund flow differences
Modern Pay-by-Bank providers such as Wallid address these through improved UX and faster settlement.
Conclusion
Pay-by-Bank reduces ecommerce payment costs by removing card network fees and chargebacks, making it a structurally more efficient alternative to card payments.
For UK Shopify and WooCommerce merchants, Pay-by-Bank represents a structurally lower-cost alternative to card payments because it removes interchange fees, eliminates scheme fees, and reduces chargebacks. This makes it one of the most effective levers for reducing ecommerce payment costs during periods of inflation.
In a high-cost environment, payment processing is one of the few controllable levers. Card payments carry structurally high costs, while Pay-by-Bank via Wallid removes key cost components.
Shifting even a portion of transactions to Pay-by-Bank can materially improve ecommerce margins.
