Regional Center Vendor Resources
Compliance guides, calculation tools, and the official 21-center California Regional Center directory — all in one place.
Compliance Calculators
Interactive tools to help you calculate deadlines, identify your compliance tier, and find your regional center.
Deadline Calculator
Calculate your WIC §4652.5 submission deadline based on your fiscal year end. Includes 9-month standard window and countdown.
Open Calculator →RC Directory
Contact information, service area, and website for all 21 California Regional Centers — searchable, updated 2026.
View Directory →In-Depth Articles
Authoritative explanations of WIC §4652.5 rules — written by Weyinmi Etchie, CPA, Principal of Guidepost Inc.
AB 143 & the 10% QIP: Why a Missed Audit Now Costs You More
How the Quality Incentive Program link changed the stakes for WIC §4652.5 compliance in FY 2026-27 and beyond.
The WIC §4652.5 Two-Year Exemption: What the Statute Actually Says
The exemption is widely misstated. Here's the correct test for reviews vs. audits — and why first-year vendors can't qualify.
The 85/15 Rule: What Counts as Administrative
WIC §4629.7 actually lists what's administrative. Most findings come from misclassification, not overspending — here's how to get it right.
CPA Review vs. Independent Audit: Which Do You Need?
Full side-by-side comparison of the two engagement types — scope, assurance level, 85/15 schedule, and the two-year exemption test for each.
What to Do When You Receive a Compliance Letter
Step-by-step response guide for vendors who received a WIC §4652.5 noncompliance notice from their Regional Center.
What We Do
Guidepost provides WIC §4652.5 reviews, independent audits, compilations, and year-round bookkeeping for vendors across all 21 California Regional Centers.
WIC §4652.5 Compliance Guide
Complete overview of thresholds, timelines, the 85/15 rule, deadlines, the exemption, and the Do Not Refer list.
CPA Reviews & Independent Audits
Fixed-fee WIC §4652.5-compliant reviews ($500K–$2M) and full audits ($2M+) — delivered on time, every time.
Compilations & Year-Round Bookkeeping
Audit-ready financial statements and 85/15-aware bookkeeping for vendors who want to stay ahead of compliance season.
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