Digital payments in Greece have entered a new, mandatory phase. Since 1 December 2025 (the original deadline of 1 November was extended by a month), all physical and online shops in the country have had to let their customers pay through IRIS, the Bank of Greece instant payment system.
For e-shop owners this change has two sides: serious financial risk if you fail to comply, and a real chance to improve your cash flow and cut operating costs.
The Strict Requirement to Integrate IRIS Payments
Complying with the obligation to accept IRIS takes more than displaying a QR code. The new legal framework, which aims to fight tax evasion and improve traceability, requires IRIS transactions to be linked to the systems of AADE (the Independent Authority for Public Revenue, the Greek tax authority).
This is where the biggest trap lies: simple solutions that require the e-shop administrator to confirm each payment manually may be judged incompatible with this requirement for an automated link.
The fines for businesses that do not accept IRIS or are not properly connected are very high: €10,000 for businesses keeping single-entry books and €20,000 for those with double-entry bookkeeping. They are halved only in small settlements and on non-tourist islands with fewer than 3,100 residents, and AADE is already carrying out inspections. The safe route for an e-shop is an API-based payment gateway (such as the DIAS redirect method; DIAS is the Greek interbank payments operator) that updates the payment status automatically and keeps you covered for tax purposes.
The Competitive Advantage: Instant Liquidity and Lower Costs
By treating compliance as an investment, e-shops can turn IRIS into a powerful financial tool. Instant funding: the biggest headache with traditional online payments is the settlement delay, with money reaching the business account 1 to 3 working days after the transaction. This ties up working capital and slows down order fulfilment. As an instant payment system, IRIS gives you funds in real time. Immediate crediting lets you ship products faster and greatly improves cash-flow management.
Lower transaction costs: the Greek Ministry of National Economy and Finance announced that IRIS P2B payments (from a private individual to a business) would be free of charge for businesses. Compared with card fees, which can reach or exceed 2%, the difference shows up quickly in your margins. Ask your bank or payment provider for its current price list, as the charges for an e-shop depend on the solution you choose.
The Right Technical Solution, as Recommended by WebMate
To ensure compliance and take advantage of the cash-flow benefits, WebMate recommends choosing a complete API solution straight away. If you use WooCommerce, you should choose a gateway that works with the DIAS redirect method (such as the compatible plugins), where the customer is taken to a secure environment and the order status updates automatically. This solution secures compliance with AADE, protecting you from the €20,000 fines, and it also improves the customer experience while adding security (payment through e-banking with no card involved).
Since 15 January 2026 the daily limit for payments to businesses (P2B) has been €1,000, up from €500, with no monthly cap. That makes IRIS a practical option for larger orders too.
If your e-shop does not accept IRIS yet, or payments are still confirmed by hand, do not leave it for later. The obligation is already in force and inspections are under way. A proper integration protects you from the fines and improves your cash flow.
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