Can I run a single Magento for NO + DK + SE + FI cross-border Nordic?

Yes, Magento’s multi-store architecture handles the Nordic cluster well. Four countries, three currencies + EUR, shared catalogue:

• One Magento backend, 4 stores, one each for NO (NOK / Bokmål + EN), DK (DKK / Danish + EN), SE (SEK / Swedish + EN), FI (EUR / Finnish + Swedish + EN). Country selector or country-detected redirect at .com.
• Per-store VAT, NO MVA 25%, DK 25%, SE 25%, FI 24%. Each with reduced rates. Magento tax_zone rules per store.
• Per-store payment methods, NO adds Vipps MobilePay + BankAxept; DK adds MobilePay + Dankort; SE adds Swish + Klarna-dominant; FI adds MobilePay + Klarna. Klarna runs across all four.
• Per-store shipping, Posten / Bring NO, PostNord DK, PostNord SE, Posti FI. Cross-border via Bring (which spans all four).
• EEA-vs-EU split, NO is EEA-not-EU (VOEC scheme for inbound, customs above NOK 3,000); DK/SE/FI are EU (intra-EU OSS thresholds). Tax + customs logic forks at the storefront level.
• EHF in NO + Peppol BIS in DK/SE/FI, same Peppol network, slightly different national profiles. Same Access Point covers all.

Architecture decided in audit step.