Authorisation Rate
What Is Authorisation Rate? Definition and How It Works
Definition
Authorisation rate is the percentage of card authorisation requests that result in an approved response from the issuing bank, calculated as approved authorisations divided by total authorisation attempts over a given period.
How it works
Authorisation rate = (approved authorisations / total authorisation attempts) x 100. If a merchant submits 1,000 authorisation requests in a day and 920 are approved, the authorisation rate is 92%. The remaining 8% are declines, categorised by decline code to identify their source: issuer declines, network declines, technical failures, or fraud-related blocks.
Authorisation rate is the upstream determinant of revenue: every declined authorisation is a lost sale. For merchants processing at scale, even small authorisation rate improvements translate directly to material revenue impact. A 1 percentage point improvement on $500M of annual GMV recovers $5M in transactions.
Authorisation rate is measured and analysed at segment level to be actionable. Blended authorisation rate across all transactions obscures the performance differences between card types, BIN ranges, transaction channels, and geographies that drive optimisation. A merchant with a 92% blended rate might have a 97% rate on domestic debit cards and an 82% rate on international credit cards, the intervention needed is different for each.
The primary levers for improving authorisation rate are: smart routing (directing transactions to the acquirer most likely to approve them), 3DS optimisation (providing richer data to the issuer to reduce fraud-based declines), retry strategy for soft declines (recovering transactions that declined due to temporary conditions), and account updater (reducing declines on stored credentials caused by stale card data).
Why it matters
Segment-level authorisation rate analysis is required for meaningful optimisation: blended authorisation rate conceals the segment-level performance differences that indicate where routing or authentication improvements will have the most impact. Merchants should track authorisation rate by card type, BIN country, transaction channel, and transaction value range at minimum.
Routing changes are the fastest lever: redirecting a transaction segment to an acquirer with better approval rate history for that segment can improve authorisation rate within the routing change deployment window. Smart routing infrastructure makes this continuous.
Benchmarking against industry averages requires like-for-like comparison: authorisation rate benchmarks vary significantly by merchant vertical, card mix, and geography. A hospitality merchant with many cross-border transactions will have a lower authorisation rate than a domestic supermarket. Benchmarks should be compared within category and card type, not across dissimilar merchant types.
Decline code analysis drives targeted interventions: different decline categories require different responses. Soft declines (do not honor, insufficient funds) may resolve on retry. Hard declines (stolen card, restricted) should not be retried. 3DS issues require authentication configuration changes. Technical failures require routing or infrastructure investigation.
With PXP
PXP reports authorisation rate by card type, BIN country, acquirer, and transaction channel in real time. Routing decisions made by PXP's smart routing engine are informed by per-segment authorisation rate history, updated continuously. Authorisation rate trends and decline code breakdowns are available in PXP's analytics dashboard.
Frequently asked questions
What is the difference between authorisation rate and approval rate?
Authorisation rate measures what percentage of authorisation requests are approved by the issuer on the first attempt. Approval rate measures the percentage of payment attempts that ultimately result in a completed transaction, including recoveries through retry, failover, and alternative payment methods after an initial decline. Approval rate is always equal to or higher than first-attempt authorisation rate. The gap between the two represents recovered transactions.
What is a good authorisation rate for e-commerce merchants?
Authorisation rates vary by vertical, card mix, and geography. Domestic e-commerce merchants with strong fraud controls and optimised routing typically achieve 92-96% authorisation rates on domestic card transactions. Cross-border transactions generally have lower rates (85-92%) due to issuer conservatism on foreign transactions. Merchants should benchmark against comparable merchants in their vertical and card mix rather than against a universal figure.
How does smart routing improve authorisation rate?
Smart routing selects the acquirer or processor most likely to produce an approval for each specific transaction, based on historical approval rate data for that card type, BIN range, transaction amount, and geography. Different acquirers have different approval rate profiles for the same transaction characteristics. Routing each transaction to its best-performing acquirer can lift overall authorisation rate by 1-3 percentage points on segments with significant acquirer performance variation.
Can authorisation rate be improved without changing routing?
Yes, through several interventions. 3DS optimisation, providing richer transaction context data, reduces issuer fraud-based declines. Account updater services reduce stored-credential declines from stale card data. Improving fraud rule calibration to reduce false positives reduces unnecessary internal blocks. Ensuring correct AVS and CVV submission reduces data quality declines. Each intervention addresses a different decline category and has different implementation complexity.
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