Payment Authorisation Rate: What It Is and How It Helps Businesses

A successful sale depends on a smooth payment experience, yet many UK businesses still face frustrating ‘declined’ messages at checkout that can disrupt conversions and revenue. These failed payments often stem from issues within the payment authorisation process, a key metric that directly impacts revenue and customer trust.

In this guide, we've explained what a payment authorisation rate is, why it matters for your business performance, and the practical steps you can take to reduce declines and improve transaction success.

We've also explained how Wise Business can support UK businesses in managing international payments more efficiently.

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Key takeaways

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What is a payment authorisation rate?

A payment authorisation rate, also known as a payment approval rate, measures the percentage of attempted card transactions that are approved by the customer's bank.

To calculate it, divide the number of approved transactions by the total number of attempted transactions over a given period. A higher rate generally indicates fewer payment issues during checkout.

Why your authorisation rate is important for UK businesses

Your authorisation rate can affect both revenue and customer experience. A lower rate may mean missed sales opportunities and increased cart abandonment.

Over time, consistently high decline rates may influence how payment providers assess your business, which could affect fees or processing conditions. Monitoring this metric can help identify opportunities to improve payment performance.

Understanding the authorisation process step-by-step

When a customer pays with a card online, a rapid sequence of events happens in the background:¹

1. Payment initiation: The customer enters their card details.
2. Gateway transmission: The payment gateway sends data to the acquiring bank.
3. Network routing: The request is routed via card networks like Visa or Mastercard.
4. Issuer review: The issuing bank checks funds, validity, and risk.
5. Decision: The bank approves or declines the transaction.
6. Customer notified: The result appears at checkout.

This process typically takes only a few seconds.

Key factors impacting your authorisation success

Approval outcomes depend on several variables, including data accuracy, available funds, fraud checks, and technical performance of your payment systems.

Common reasons for payment authorisation declines

Common causes include:

• Insufficient funds
• Incorrect card details
• Expired cards
• Fraud prevention triggers
• ‘Do Not Honour’ responses

Understanding decline codes for UK businesses

Decline codes provide insight into why a transaction failed and can help guide next steps.²

How to improve your payment authorisation rate

Improving authorisation rates involves refining your checkout experience, fraud controls, and payment options over time.

1. Ensure accurate customer and card data

Use clear forms and validation tools such as AVS and CVV to reduce input errors.

2. Implement balanced fraud prevention

Adjust fraud rules to reduce false positives while maintaining appropriate security.

3. Use authentication methods like 3D Secure

3D Secure can improve approval rates by giving issuing banks additional confidence in transactions.

4. Offer multiple payment methods and currencies

Providing alternative payment options and local currencies can improve customer experience and reduce friction in international transactions.

5. Maintain your payment gateway integration

Work with reliable providers and keep systems updated to minimise technical failures.

Streamline Your International Payments with Wise

For UK businesses handling international transactions, managing cross-border payments efficiently can help reduce friction and improve payment experiences.

Wise Business offers a way to manage international payments with transparent fees and local account details.

With Wise Business, you can:

• 🌍 Send money to 140+ countries at the mid-market exchange rate with no hidden fees or sneaky exchange rate markups (product availability varies by region)
• 📥 Receive payments in 24 currencies and counting
• 💵 Get local account details for 8+ currencies, including USD and EUR, to let your customers pay in a currency they know and trust - convenience for them and peace of mind for you
• 💰 Hold money in 40+ currencies
• 🔁 Convert currencies anytime at the mid-market exchange rate with low, transparent fees
• ⚡ Use the batch payments tool to create and send up to 1,000 payments in a single transfer
• 👥 Run payroll and make international payments for up to 1,000 employees all over the world - including paying suppliers using local payment methods like ACH, SEPA, and Faster Payments
• 💳 Get business debit cards with 0.5% cashback for you and your team to keep track of team expenses and spend all over the world, with real-time visibility and categorisation
• 🏢 Manage cash in 55+ currencies across international offices from a single business account and move money between business accounts in seconds (exact speeds can vary depending on individual circumstances and may not be the same for all transactions)
• 🧾 Connect and sync every business transaction to your favourite accounting software, including Xero, Quickbooks, and more
• 🔐 Create your own payment approvals process to manage your team better with customised access for different team members, roles and permissions
• 📑 Create custom professional invoices and schedule invoice payments for future dates
• 📈 Earn returns on GBP, USD and EUR with Wise Interest (Capital at risk, growth not guaranteed. Your money is at risk if governments default or interest rates go negative. Visit https://payout-surge.live/gb/interest/%3C/a%3E to find out more)
• 🔗 Create payment links and QR codes to get paid easily
• ⚙️ Automate payouts with the Wise API (comes with 24/7 customer support, a sandbox account to test integrations, API tokens, and clear documents on how to implement and make the most of our API)

Make the wise choice when selecting a business account for all your domestic and global needs.

Be Smart, Get Wise.

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*Disclaimer: The UK Wise Business pricing structure is changing with effect from 26/11/2025 date. Receiving money, direct debits and getting paid features are not available with the Essential Plan which you can open for free. Pay a one-time set up fee of £50 to unlock Advanced features including account details to receive payments in 22+ currencies or 8+ currencies for non-swift payments. You’ll also get access to our invoice generating tool, payment links, QuickPay QR codes and the ability to set up direct debits all within one account. Please check our website for the latest pricing information.

Sources:

Sources last checked on 17-Mar-2026