Greek E-Commerce Payment Methods 2026: Cards, IRIS, PayPal, Klarna & Open Banking Guide

The 2026 Greek Payments Landscape at a Glance

Few EU markets juggle as many parallel payment rails as Greece. The cards below summarise the ten layers in this guide.

1. IRIS Online Payments — The Greek Instant Bank-to-Bank Rail

IRIS at a Glance

IRIS Online Payments is the Greek interbank instant-payment scheme operated by DIAS S.A., the national clearing house owned by the Greek banking sector. It launched as a P2P mobile transfer rail — mobile number, VAT number (ΑΦΜ) or IBAN — settled in seconds, 24/7, free for consumers, riding the SEPA Instant Credit Transfer rail.

Between 2022 and 2024 IRIS expanded into e-commerce checkout, B2B and merchant POS. By 2026 every major Greek bank — Piraeus, Eurobank, NBG, Alpha, Attica, Optima, Pancreta and HSBC Greece — supports IRIS. The Bank of Greece counts it as the fastest-growing electronic payment method.

Why IRIS is a Big Deal for Merchants

• Free for consumers — zero individual fee
• Far cheaper than cards — flat cents or sub-1% vs. 1.5–2.5% + €0.10–0.25
• Instant settlement — IBAN GR in seconds, not T+1/T+2
• No chargebacks — push payment; bank-transfer risk profile
• Native bank-app UX — biometric SCA built in

IRIS for Business and IRIS for Government

IRIS for Business launched in 2024, enabling B2B instant transfers up to ~€10,000 with structured remittance for auto-reconciliation. IRIS for Government (taxes, social security, municipal fees) launched in 2023 and is mandatory in many public services. For Greek B2B e-commerce side-channels, IRIS for Business is replacing manual SEPA at speed.

IRIS Merchant Fee Structure 2026

IRIS pricing is set by the merchant's PSP / bank, not by DIAS or the scheme itself, so it varies across providers. Typical 2026 bands:

How to Add IRIS to Your Greek Checkout

• Via Viva.com — single onboarding gets cards + IRIS + Apple/Google Pay + Klarna in one API; most popular for SMEs
• Via your bank's e-commerce gateway — Piraeus ePOS, Alpha e-Commerce, Eurobank e-Commerce, NBG Pay all offer IRIS plug-ins
• Via Stripe — added IRIS support in late 2024 for Greek-VAT-registered businesses

2. Visa & Mastercard — The Dominant Card Layer

Card Penetration in Greece

Despite IRIS's rise, Visa and Mastercard still drive 55–60% of Greek e-commerce checkouts in 2026. Debit (Visa Debit, Maestro, V PAY) leads; credit penetration is lower than Northern Europe. After 2015 capital controls and COVID-era digitisation, card usage rose sharply — the Bank of Greece Payments Bulletin shows 8–12% YoY growth.

All major Greek banks issue cards: Piraeus, Eurobank, NBG, Alpha, Attica, Optima, Pancreta and HSBC Greece. Acquiring is dominated by Viva Wallet, Worldline Greece (former NBG Cardlink) and Nexi Greece (former Piraeus arm).

SCA and 3-D Secure 2.x

Under PSD2 (transposed as Law 4537/2018), SCA is mandatory for virtually all remote card payments. 3DS2 is required — issuer approves frictionlessly on low risk score or challenges via biometric / OTP. The Bank of Greece enforces SCA; failure shifts chargeback liability to the merchant. PSD3 in trilogue is expected to tighten rules from 2026/2027.

Card Acquiring Fees 2026

Greek card acquiring is competitive but slightly above Pan-EU average due to legacy interchange and scheme fees. Typical 2026 bands:

On top of MDR, Greek acquirers charge €0.10–€0.25 per tx plus monthly gateway / terminal fees for physical POS.

Card Chargebacks and Greek Consumer Law

Greek law (Law 2251/1994 + EU CRD) gives shoppers 14-day withdrawal and a 2-year statutory guarantee on B2C goods. Combined with card-scheme chargeback rights (typically 120 days "merchandise not received"), card payments carry meaningful chargeback risk — many Greek merchants nudge shoppers toward IRIS or COD on high-risk categories.

3. Viva Wallet — The Greek Payments Unicorn

From Athens Startup to JPMorgan-Backed EU Bank

Viva Wallet (renamed Viva.com in 2022) was founded 2010 in Athens by Haris Karonis as a prepaid-card and online-payments venture in post-crisis Greece. Viva obtained a full EU bank licence (Viva.com Bank) in 2020 via the Belgian regulator, enabling EEA passporting. In January 2022 JPMorgan Chase acquired a 48.5% stake at a reported €800M+ valuation — the largest US-bank fintech investment into a Greek-origin company.

What Viva Offers Greek Merchants

Viva's 2026 stack is the most comprehensive single-vendor option for Greek SMEs:

• Card acquiring — Visa, Mastercard, Maestro, Amex; dynamic 3DS2 routing
• IRIS Online Payments — native in the Viva checkout
• Apple Pay & Google Pay — one-click activation
• Klarna BNPL — Viva re-sells Pay in 3 and Pay Later
• Smart Checkout POS — Android terminals (€29 hardware) for omnichannel
• Viva business account — IBAN GR with cards issued under the Viva BIN
• VAT financing — Viva pre-finances VAT for cash-flow on 24% VAT cycles

Viva Fee Structure 2026

Viva publishes transparent fee tiers by merchant volume. Typical 2026 pricing for Greek SMEs:

Viva typically waives monthly minimums for SMEs under €5K/month — attractive for early-stage Greek e-commerce.

Why Viva Beats International Gateways for Domestic Volume

Viva's edge is Greek embeddedness: native IRIS, EUR / IBAN GR T+0 same-day on most tiers, Greek-language support, myDATA-compatible exports and Greek tax registration. International gateways (Stripe, Adyen, Mollie) excel cross-border but carry slightly higher EU rates and add Greek-tax friction.

4. PayPal Greece — The Cross-Border Champion

PayPal's Greek Footprint

PayPal has supported Greek consumers and merchants since the mid-2000s, settling EUR to IBAN GR. It is not the dominant domestic method — cards and IRIS lead — but PayPal is indispensable for cross-border. Diaspora customers (Greek-Americans, Greek-Australians, Greek-Germans), tourists and shoppers on AliExpress/eBay/global SaaS expect it. Listing on Etsy or Amazon often requires a PayPal payout account.

PayPal Greece Fees 2026

• EU/EEA commercial — 2.49% + €0.35 per tx (post-2024 EU restructure)
• Cross-border (non-EU) — +0.4–1.5%; FX margin ~3.5–4%
• PayPal Pay in 4 — Greek rollout 2024; standard rate
• Buyer Protection — included; chargebacks via PayPal disputes

Why Greek Merchants Still Need PayPal in 2026

PayPal is the highest-trust cross-border checkout for Greek B2C exporters. Shoppers recognise it, dispute resolution is one-click, Buyer Protection acts as a brand-trust signal. Trade-off: fees (above Stripe / Viva for EU cards) and reconciliation overhead between PayPal balance and IBAN GR settlement. Zunapro reconciles both into one ledger and auto-maps to myDATA.

5. Stripe Greece — The Developer-First Gateway

Stripe in Greece Since 2020

Stripe became generally available for Greek-VAT-registered businesses in 2020. By 2026 it's the default for Greek SaaS, subscriptions, marketplaces and tech-driven e-commerce. Strengths: a single API for cards, Apple Pay, Google Pay, Link, Klarna, SEPA Direct Debit and (since late 2024) IRIS; Radar fraud-scoring; Stripe Billing.

Stripe Greece Fees 2026

Stripe's Greek pricing follows the EU schedule:

Stripe waives monthly minimums and bills per-transaction. IBAN GR payouts default T+7 (T+2 on request).

When Stripe Beats Viva (and Vice Versa)

For pure-domestic SME volume, Viva typically beats Stripe on rate (IRIS and EU debit). For SaaS, subscriptions, multi-currency and developer-led teams, Stripe wins. The 2026 best practice is to run both — Viva for domestic cards + IRIS, Stripe for international + subscriptions — with Zunapro routing by currency, BIN and geography.

6. Cash on Delivery (Αντικαταβολή) — Still 30%+ of Orders

Why COD Is Still Huge in Greece

Most EU markets have seen COD collapse to single digits — Greece is the exception. COD (Αντικαταβολή) still claims 30–35% of Greek e-commerce orders in 2026, particularly for fashion, home, books and shipments to the islands or rural mainland. Greek consumers value inspecting before paying, and trust in unfamiliar merchants leans cautious outside Athens and Thessaloniki.

The Greek COD Courier Stack

• ELTA Courier — postal subsidiary, widest island reach
• ACS Courier — leading private courier; urban performance + tracking UX
• Geniki Taxydromiki — competitive B2C COD service
• BoxNow — automated parcel lockers, COD at pickup; fast-growing
• Speedex / DHL Greece — premium; Speedex strong on COD, DHL cross-border

COD Fees and Settlement

• COD surcharge — €1.50–€3.00 per parcel on top of shipping
• Settlement — courier weekly or bi-weekly transfer to IBAN GR
• Insurance — courier-set limit typically €500–€1,000
• Refused parcels — return-to-sender €2–€4 plus original outbound

The COD Risk and Margin Reality

COD carries a structural refusal rate of 8–14% on fashion, 2–6% on electronics — shoppers change minds or aren't home. 2026 playbook:

• Offer COD on virtually all orders — refusing hurts conversion materially
• Add €1.50–€2.50 COD surcharge transparently to recover the courier fee
• SMS / email pre-delivery confirmation suppresses refusals 30–50%
• Push BoxNow lockers as a COD-locker channel — lower refusal vs. door-delivery

7. Apple Pay & Google Pay — The Mobile-Wallet Surge

Mobile Wallets in Greece

Mobile-wallet adoption in Greece took off in 2022. By 2026 Apple Pay and Google Pay combined account for an estimated 18–22% of Greek online checkouts (up from under 5% in 2022), driven by iPhone share among urban consumers, tap-to-pay POS rollout, and persistent COVID-era contactless habits.

All major Greek issuers support both wallets: Piraeus, Eurobank, NBG, Alpha, Attica, Optima, Pancreta and Viva.com. Viva also provisions Apple Pay tokenisation through Viva business-account cards.

Apple Pay / Google Pay Activation

Apple Pay and Google Pay are tokenised card payments routed through your acquirer — not separate PSPs. One-click activation in:

• Viva.com — enabled by default
• Stripe — domain-verification step; Apple Pay enabled at account level
• Worldline Greece / Nexi Greece — checkout SDK supports both
• Adyen / Mollie — both available in Greece, out of the box

Why Mobile Wallets Move the Needle

• Higher SCA pass rates — Face ID / Touch ID counts as SCA; 3DS2 challenges drop
• Lower abandonment — typically 12–18% mobile conversion lift vs. card-on-file
• Slight rate advantage — some acquirers price wallet-tokenised at the lower EU-debit band

8. Klarna BNPL — Pay in 3 and Pay Later in Greece

Klarna's 2023 Greek Entry

Klarna — the Swedish BNPL giant founded 2005 in Stockholm — entered Greece in 2023, initially via Viva.com and later Stripe and Adyen. Greek products:

• Pay in 3 — three equal interest-free instalments
• Pay Later (30 days) — buy now, pay in 30 days, interest-free
• Financing — 6–36 month instalments with disclosed APR (limited Greek rollout)

Klarna Adoption in Greece

Klarna's Greek share is still under 5% of checkouts but growing fast in fashion, consumer electronics and home and furniture. Klarna data shows a typical 20–25% basket-size uplift on Pay-in-3 merchants and 6–10% conversion lift on €100–€600 SKUs. For under-40 audiences, Klarna is becoming table stakes alongside cards and IRIS.

Klarna Fees and Risk Model

Klarna assumes credit risk — you get paid in full at sale:

• Pay in 3 / Pay Later — 3.0–5.0% + €0.30–€0.40
• Klarna Financing — 4.0–6.0% + €0.40
• Settlement — T+1 to T+7 to IBAN GR

Compliance and PSD2 Considerations

Klarna's BNPL is regulated under PSD2 (tightening under the EU's CCD update). SCA applies at activation; credit checks are real-time. Bank of Greece supervises payment-services aspects; credit falls under the EU's harmonised consumer-credit framework.

9. B2B Faktura — SEPA, Bank Transfer and IRIS for Business

The Default Greek B2B Stack

The dominant Greek B2B method in 2026 is still bank transfer (Έμβασμα / SEPA Credit Transfer) on 30–60 day open-account with a tax invoice (τιμολόγιο) in myDATA. Cards cover spot buys; mid- and large-ticket flows as SEPA. EUR-zone SEPA is free for the buyer and settles T+1 (T+0 via SEPA Instant).

IRIS for Business

IRIS for Business (2024) is the most consequential B2B payments innovation of the decade for Greek SMEs. Instant transfers up to ~€10,000 between business accounts at participating Greek banks, with structured remittance (invoice number, VAT-ID) for auto-reconciliation. Every major Greek bank is live.

Factoring and Receivables Finance

Larger B2B operators with extended terms use factoring via Eurobank Factors, Piraeus Factoring, NBG Factoring and Alpha Bank Factoring. Typical 2026 rates are 1.5–3.5% of invoice value for non-recourse factoring, with 80–90% day-1 advance.

myDATA Real-Time Invoicing

Every Greek B2B invoice must be transmitted to myDATA in real time with a MARK identifier on the PDF; without it the buyer cannot claim VAT input deduction. Zunapro automates this end-to-end: each cart invoice goes to myDATA, the MARK is stored on the order, and payment-method enrichment links it to its SEPA / IRIS / card settlement.

Practical 2026 B2B Stack

• Small (under €10K) — IRIS for Business; instant, structured, free
• Mid (€10K–€100K) — SEPA Credit Transfer on 30–60 day open account
• Large (€100K+) — SEPA + factoring; documentary credit for cross-border
• Cross-border EU — SEPA + OSS VAT; reverse-charge intra-community

10. Crypto Payments — MiCA-Era Greek Acceptance

Crypto in Greek E-Commerce

Greek crypto-payment volume remains under 1% of checkouts in 2026, concentrated in tech and electronics, gaming and esports, travel and tourism, B2B SaaS and luxury / high-ticket items where international buyers prefer crypto for cross-border settlement. Regulatory clarity has been the accelerator: MiCA (EU 2023/1114) entered force in stages from 2024, the first harmonised EU framework for CASPs.

HCMC, Bank of Greece and MiCA

• HCMC — supervises CASPs and crypto-asset issuers under MiCA (Greek transposition 2024)
• Bank of Greece — supervises payment-services aspects; EUR settlement falls under PSD2
• AML/CTF — Hellenic AML Authority enforces FATF Travel Rule above €1,000

How Greek Merchants Accept Crypto in 2026

Direct crypto holding requires HCMC CASP licensing — impractical for most retailers. The 2026 model is "crypto-in, EUR-out": a CASP-licensed PSP accepts crypto, converts to EUR at sale, pays the merchant in EUR. Common Greek-supporting PSPs:

• CoinGate — Estonia, MiCA-compliant, 70+ assets; ~1.0%
• BitPay — US-origin, EU-regulated; ~1.0%
• NOWPayments — wide altcoin coverage; 0.4–0.5%
• Triple-A — newer, MiCA-aware, instant EUR settlement

Tax Treatment

From AADE / myDATA, a crypto-paid order is a EUR sale (merchant receives EUR), so myDATA submission and Greek VAT (24%, 13%, 6%, 0%) follow the standard product VAT code. Direct crypto holding (rare) follows 2023/2024 tax clarifications: capital gains under standard income / capital-gains rules.

Greek Payment Method Fee Comparison 2026

Side-by-side fee view across all ten layers — typical 2026 merchant rates and notable extras:

Method	Low Tier	Mid Tier	High Tier	Extras / Notes
IRIS Online Payments	€0.05–€0.20 flat	0.3% – 0.7%	0.7% – 1.0%	Free for consumers · no chargebacks · instant settlement
Visa / Mastercard (EU debit)	1.0% – 1.5%	1.5% – 2.5%	2.5% – 3.5%	+€0.10–€0.25 per tx · 3DS2 mandatory · regulated interchange
Viva Wallet (bundled)	0.5% – 1.0%	1.4% – 2.0%	2.5% – 3.5%	IRIS + cards + Apple/Google Pay + Klarna in one stack
PayPal Greece	2.49% + €0.35 EU · +0.4–1.5% non-EU			FX margin ~3.5–4% · Buyer Protection included
Stripe Greece	1.5% + €0.25	2.5% + €0.25	3.25% + €0.25	IRIS supported · subscriptions · multi-currency
COD (Αντικαταβολή)	€1.50 – €3.00 per parcel (courier fee)			8–14% refusal risk on fashion · weekly courier settlement
Apple Pay / Google Pay	Routed through acquirer (no separate fee)			+12–18% mobile conversion · SCA-exempt via biometric
Klarna BNPL	3.0% – 5.0% + €0.30–€0.40			+20–25% basket size · merchant paid up front
SEPA / B2B Bank Transfer	Near-zero (bank fee €0.10–€0.50)			30–60 day open account · IRIS for Business under €10K
Crypto (via CASP)	0.4% – 1.0% CASP fee			EUR-out settlement · MiCA / HCMC compliance · <1% share

Reading the table: IRIS is structurally cheapest and lowest-risk for domestic volume. Cards are the most expensive mainstream method but unavoidable. Viva bundles cards + IRIS + wallets + Klarna at attractive blended rates. Stripe is best for cross-border and subscriptions. COD has a counter-intuitive net cost but still drives 30%+ of orders. Klarna costs more but lifts basket size. Crypto is low-fee but tiny volume. The right stack mixes 4–6 in parallel — exactly what Zunapro orchestrates.

Greek Legal Framework 2026 — Bank of Greece, HCMC, PSD2, myDATA

Bank of Greece — The PSP and EMI Supervisor

The Bank of Greece (Τράπεζα της Ελλάδος) supervises all PSPs and EMIs under PSD2 (Law 4537/2018). It maintains the public PSP register, enforces SCA / 3DS2 and publishes the quarterly Payments Bulletin tracking card, IRIS and SEPA volumes. Non-Greek PSPs passport in via Bank of Greece notification.

HCMC — Crypto and Capital Markets

The Hellenic Capital Market Commission (HCMC — Επιτροπή Κεφαλαιαγοράς) supervises CASPs and crypto-asset issuers under MiCA (Greek transposition 2024), alongside securities markets and investment firms. HCMC matters if you hold crypto directly; using a CASP-licensed PSP keeps you outside the licensing burden.

PSD2 and Strong Customer Authentication

PSD2 (EU Directive 2015/2366) is transposed as Law 4537/2018. Its core for e-commerce is SCA — virtually every remote card payment needs two of three factors. In practice 3DS2 with biometric or OTP. Exemptions exist (low-value under €30, TRA above 95th-percentile fraud, MIT, recurring), but the default is challenge-on. PSD3 in trilogue is expected to tighten further from 2026/2027.

Open Banking — PIS and AIS

PSD2 also opened up Open Banking in Greece: AIS and PIS are now standard. IRIS rides the PIS rail, as do Trustly, Tink and TrueLayer. Bank-rail payments (IRIS, SEPA Instant) are increasingly competitive with cards on UX, cost and settlement speed.

myDATA — Real-Time Tax-Document Submission

myDATA is AADE's real-time invoicing platform, mandatory since 2021. Every sale — IRIS, card, PayPal, Stripe or COD — must be transmitted with a MARK identifier, referenced on the printed invoice. From 2024 the platform enriches payment-method metadata, enabling AADE to cross-check against bank-settlement files and acquirer reports. Missing the MARK means no VAT input deduction, plus administrative fines.

Consumer Protection — Law 2251/1994

• 14-day right of withdrawal on distance contracts (EU CRD transposition)
• 2-year statutory warranty on B2C goods, independent of commercial guarantee
• GDPR — enforced by the Hellenic Data Protection Authority (HDPA / ΑΠΔΠΧ)
• Hellenic Consumer Protection Authority — handles complaints and pricing-display rules

Payment Operations & Reconciliation in Greece

The Reconciliation Problem

A typical Greek e-commerce merchant in 2026 runs 4–6 payment methods in parallel. Each settles on a different schedule, into different accounts, in different formats (CSV couriers, XML acquirers, API Viva/Stripe). Manual reconciliation against myDATA is the largest hidden cost. The standard answer is one consolidated ledger.

The Settlement-Timing Matrix

• IRIS — instant (seconds) to IBAN GR
• Cards via Viva — T+0 or T+1 to IBAN GR
• Cards via Stripe — T+7 default, T+2 on request
• PayPal — instant to balance; T+1 on IBAN GR withdrawal
• COD — courier weekly or bi-weekly bank transfer
• Klarna — T+1 to T+7 to IBAN GR
• SEPA / B2B — T+0 to T+1 (SEPA Instant where supported)
• Crypto (via CASP) — T+0 to T+1 EUR to IBAN GR

Practical 2026 Reconciliation Stack

2026 stack: Viva or Stripe as primary (cards + IRIS + wallets + Klarna), PayPal for cross-border, 1–2 COD couriers (ACS + ELTA Courier), SEPA for B2B. Zunapro ingests settlement files from every layer, matches them to orders by amount and reference, surfaces unmatched items, and auto-pushes into myDATA with the right MARK and VAT code.

Cross-Border Payments from Greece

Pan-EU Acceptance

Once set up under PSD2, accepting Pan-EU payments is mostly free. Cards accept any EEA card with the same SCA flow. SEPA covers all 36 SEPA countries with one IBAN. IRIS is Greece-only for consumer payments; Pan-EU SEPA Instant is the fallback. PayPal and Stripe handle EUR and major currencies natively.

Multi-Currency and FX

• Stripe — EUR or 135+ currencies; FX ~2%
• Viva — primarily EUR; multi-currency add-on
• PayPal — multi-currency native; FX ~3.5–4%
• Wise / Revolut Business — popular for SMEs with non-EUR payouts

The Cross-Border Payments Stack

• Acceptance: cards via Stripe + Viva, PayPal, IRIS for Greek shoppers
• Pricing: multi-currency (EUR, USD, GBP), daily ECB rate sync
• Compliance: myDATA for Greek invoicing, OSS for EU B2C cross-border
• Reconciliation: single ledger across all rails

How to Build Your Greek Payment Stack — 2026 Step-by-Step

1. Pick Your Primary Acquirer

• Domestic-heavy SME, omnichannel → Viva.com (cards + IRIS + Apple/Google Pay + Klarna bundled)
• Subscriptions, cross-border, developer-led → Stripe
• Enterprise, multi-PSP redundancy → Adyen or Worldline alongside one of the above

The 2026 winning configuration is Viva + Stripe with routing — Viva for domestic IRIS and EU debit, Stripe for international and subscriptions.

2. Add IRIS Online Payments

On Viva, IRIS is on by default. On Stripe, enable IRIS in the dashboard (Greek-VAT-registered only). Expose IRIS as a first-class option at the top of checkout — Greek shoppers actively look for it; IRIS clicks recover 5–10% of cart abandonment.

3. Add PayPal for Cross-Border Trust

Open a PayPal Business account in EUR with IBAN GR payouts. Keep PayPal visible but not dominant — most domestic volume should sit on cheaper rails; visible PayPal serves cross-border and diaspora. Pay in 4 is optional and worth A/B-testing.

4. Enable Apple Pay and Google Pay

One-click toggles in Viva and Stripe. Stripe requires a domain-verification step. Expect 12–18% mobile-conversion lift over typed card details.

5. Activate Klarna BNPL (fashion / electronics / home)

If your average basket is €60–€600 and your audience skews under 40, Klarna lifts baskets 20–25% and improves mid-ticket conversion. Activate via Viva or Stripe after a credit check.

6. Set Up COD Properly

Sign up with at least two couriers — typically ACS and ELTA Courier, plus BoxNow for lockers. Add a €1.50–€2.50 COD surcharge transparently. SMS pre-delivery confirmation suppresses refusal rates.

7. Connect myDATA (Mandatory)

Every sale must be transmitted to myDATA in real time: register in the AADE portal, obtain API credentials, submit each invoice, store and reference the returned MARK on the PDF. Zunapro handles all four steps automatically once payment rails are connected.

8. Connect via Zunapro (10-Minute Integration)

1. Sign in to Zunapro and open the Greece module
2. Connect each PSP — paste API keys / OAuth into the Viva, Stripe, PayPal and courier tiles
3. Map your VAT codes — Zunapro auto-suggests 24% / 13% / 6% / 0% based on product category; you confirm
4. Enable myDATA + IRIS — single toggle each
5. Go live — first sync completes in roughly 10 minutes for a typical SME catalog

Greek Payments FAQ 2026