Kosher and Halal are not government certifications — they are private, faith-based audits administered by religious authorities. They matter commercially because retailers in certain regions (Northeast U.S., parts of Florida, much of the Middle East and Southeast Asia) require them as a baseline for shelf placement.
Kosher: The Orthodox Union (OU) is the largest certifier in the U.S. — the circled-U symbol is the most recognized kosher mark globally. OK Kosher, Star-K, and KOF-K are major alternatives. The certifying agency sends a rabbinical supervisor (mashgiach) to audit ingredients, equipment cleaning, and production. Cost ranges $2,000-15,000 per year for a small-to-mid CPG operation. Certification covers specific SKUs at specific facilities, not the brand as a whole.
Halal: IFANCA is the most-recognized U.S. Halal certifier with broad international acceptance. The Islamic Food and Nutrition Council of Canada and Halal Transactions of Omaha are alternatives. The audit covers ingredient sourcing (no pork-derived gelatin, no alcohol-derived solvents in certain interpretations), equipment dedication, and production timing. Cost is similar to kosher — $2,000-12,000/year.
Some products carry both certifications. Many do not need either. Decide based on your target retail channels and consumer base, not based on "more certifications = better."