How do I configure Magento for Nordic cross-border (SE / DK / NO / FI)?

Three patterns, depending on volume:

• Single-store, geo-priced, one storefront with Moms / DK-VAT / NO-VAT / FI-VAT calculated by destination. Cheapest. Good for small SE-first stores selling occasionally to other Nordics.
• Four storefronts, shared catalogue, store per country (sv_SE, da_DK, nb_NO, fi_FI) with local-language UI, local payment rails (Klarna everywhere, Vipps in NO, MobilePay in DK), local shipping (PostNord, Bring, Posti). One Magento backend, one PIM. Most popular pattern.
• Four websites, four backends, legally separate AB / AS / Oy entities. Best for SEK 50M+ stores with regional fulfilment hubs. Magento website-level split.

Norway is the trickiest (non-EU, separate VAT + customs regime, we handle the OSS exclusion + customs declarations cleanly). PostNord cross-border + Bring give unified label printing across all four countries.