
Maryland and Washington Now Tax B2B Tech Services: What Sellers Owe in 2026
Maryland's 3% tech-services tax (effective July 1, 2025) and Washington's ESSB 5814 (effective October 1, 2025) made IT consulting, custom software, data processing, and digital advertising taxable — even for out-of-state sellers past economic nexus thresholds. Here's what's taxable, the contract-renewal trap, and a compliance checklist.










