Not long ago, accounting meant downloading a CSV from your bank, uploading it into your accounting software, manually entering invoice data, and then copying figures into a tax return. Each step was a separate process, each handoff was an opportunity for error, and nothing happened in real time.
That world is disappearing. The reason is APIs.
What Changed: The API Revolution
An API (Application Programming Interface) is a structured way for two software systems to exchange data. Instead of a human exporting a file from one system and importing it into another, the systems talk directly to each other.
In accounting, this changes everything. Your bank sends transaction data to your accounting system automatically. Your accounting system sends VAT return data to the tax authority. Your payment processor reports every transaction as it happens. And none of this requires a human to move a file.
The shift from batch processing to real-time data flow is not just an efficiency improvement. It fundamentally changes when and how accounting work gets done.
The Key APIs in Modern Accounting
Banking APIs: Open Banking and PSD2
The EU's Payment Services Directive 2 (PSD2) mandated that banks open up their data to authorised third parties through APIs. This was the single biggest catalyst for modern accounting technology in Europe.
Before PSD2, getting bank transaction data into an accounting system meant screen scraping (fragile, unreliable, and technically a grey area) or manual downloads. Now, with proper authorisation from the account holder, an accounting platform can pull transactions directly from the bank in near real time.
In Malta, the major banks have implemented PSD2-compliant APIs, though the quality and reliability of these implementations varies. Some banks provide rich transaction data with merchant details and categorisation hints. Others provide the bare minimum: date, amount, and a cryptic reference string.
Government APIs: Tax Filing
Tax authorities across Europe are increasingly offering APIs for electronic filing. HMRC in the UK was an early mover with its Making Tax Digital (MTD) programme, which requires businesses to submit VAT returns via API rather than through manual web forms.
Malta's Commissioner for Revenue (CfR) has been digitising its services, and the Malta Communications and Technology Agency (MTCA) has been driving broader government digital infrastructure. The trajectory is clear: paper forms and manual web submissions are being replaced by direct system-to-system filing.
Payment Processor APIs
Stripe, PayPal, Revolut Business, SumUp, and other payment processors all provide APIs that report transaction-level data. For self-employed professionals who receive payments through these platforms, this means every payment can flow directly into their accounting records without manual entry.
The richness of payment processor data is often superior to bank data. A Stripe webhook tells you not just the amount, but the customer, the invoice it relates to, the payment method, any fees deducted, and the settlement timeline.
Invoicing APIs
Modern invoicing platforms (and accounting systems with invoicing built in) can automatically match incoming payments to outstanding invoices. When a client pays invoice #247, the system matches the payment to the invoice, marks it as paid, and records the revenue, all without human intervention.
Webhooks vs. Polling: How Data Actually Flows
There are two fundamental patterns for API-based data flow.
Polling means your system periodically asks another system, "Do you have anything new?" It might check the bank API every hour, or every 15 minutes. Polling is simple but inefficient: most of the time, the answer is "no, nothing new," and you have wasted an API call.
Webhooks flip the model. Instead of asking, you tell the other system, "Send me a notification whenever something happens." When a new transaction posts, the bank pushes it to your accounting system immediately. No wasted calls, no delay.
In practice, most modern accounting integrations use webhooks for real-time events (new transactions, payment confirmations) and polling as a fallback to catch anything the webhooks might have missed. Belt and braces.
Real-Time Accounting: What It Actually Means
When APIs connect everything, accounting stops being a retrospective exercise. Instead of looking back at last month's transactions and trying to reconstruct what happened, the system maintains a continuously up-to-date view.
This has practical implications:
Cash flow visibility. You know your current cash position at any moment, not as of the last bank reconciliation you bothered to do.
Tax liability tracking. Your estimated tax liability updates with every transaction, not once a quarter when your accountant runs the numbers.
Compliance readiness. If your accounting records are maintained in real time, filing a VAT return is not a project. It is a confirmation of figures the system has already calculated.
Error detection. Discrepancies between what your invoicing system says you should have received and what your bank says you actually received surface immediately, not months later.
The Malta Context
Malta presents an interesting case for API-driven accounting. The market is small enough that the number of banks, payment processors, and government systems is manageable. But the regulatory environment is complex, with EU VAT rules, local tax legislation, and sector-specific requirements all intersecting.
The CfR has been investing in digital infrastructure, and the direction of travel is clearly toward electronic filing and automated data exchange. For accounting service providers, this means that building API integrations with Maltese government systems is not a nice-to-have; it is a prerequisite for relevance.
Where This Is Heading
The logical endpoint of API-driven accounting is fully automated filing. If the bank pushes transactions to the accounting system, the accounting system categorises and reconciles them, and the tax authority accepts filings via API, then the human role shifts entirely from data processing to oversight and advisory.
We are not there yet. Bank APIs still have reliability issues. Government APIs are still maturing. And the categorisation and reconciliation layer still needs human review for edge cases.
But the architecture is in place. The plumbing exists. And the firms that build on this foundation now will be the ones delivering genuinely real-time accounting services within the next few years.
The firms still asking clients to email bank statements will find it increasingly hard to compete.
Michael Cutajar, CPA — Founder of Accora.