Built specifically for Washington accounting firms
Accounting practice management software was never built with state-level compliance in mind. NSBC was created to replace disconnected spreadsheets, missed agency deadlines, and manual calendar math with automated precision.
The fragmentation problem in Washington state
Washington CPAs face a unique matrix of state filing requirements: monthly and quarterly Department of Revenue (WA DOR) B&O taxes, quarterly Employment Security Department (ESD) filings, and Labor & Industries (L&I) workers’ compensation reports alongside federal returns.
Traditional practice management tools treat compliance deadlines as static one-off tasks. Firms were forced to maintain fragile Excel sheets with complex date formulas just to keep track of who owed what and when.
A rule engine that calculates every deadline
NSBC changes the paradigm: when you subscribe an entity to a vertical (such as Bookkeeping or Payroll), our engine generates every fixed-date, monthly, quarterly, and fiscal period-end deadline automatically.
Engineered for security and precision
Four foundational pillars powering every firm on the NSBC network.
Washington Rule Engine
4 distinct rule algorithms supporting fixed dates, monthly repeating cycles, quarterly state filings, and period-end offsets.
Multi-Tenant Isolation
Postgres Row-Level Security (RLS) guarantees complete data partition between firms. No cross-tenant data leaks, ever.
SOC2-Ready Vault
Encrypted client documents with temporary time-bound signed URLs, inline preview, and immutable audit logs.
Unified Practice Hub
Seamless Nylas inbox integration (Gmail & Outlook), ClickSend SMS alerts, Kanban boards, and branded client portals.
Built by practitioners for practitioners
Our team blends enterprise software architecture with deep Washington tax & compliance expertise.
Matthew Evans
Specializing in distributed systems, Postgres RLS multi-tenancy, and automated compliance engines for professional services.
Sarah Reynolds, CPA
14+ years managing Washington accounting practices, guiding firms through DOR, ESD, and L&I audit preparation.
David Kim
Pioneering seamless integrations with Nylas email sync, ClickSend SMS gateways, and client portal authentication.
Ready to modernize your Washington practice?
Join forward-thinking accounting practices and CPAs across Washington who have automated their compliance workflow.