New tax reforms under the Nigeria Tax Administration Act 2025 are set to reshape Nigeria’s corporate landscape by imposing a 5 million naira penalty on companies that award contracts to unregistered businesses lacking a Tax Identification Number. This shift forces corporations to enforce a strict no TIN, no contract policy to avoid these administrative fines. While the reform aims to expand the national tax base and accelerate the formalization of small businesses, experts warn it may inadvertently exclude informal artisans, freelancers, and small-scale farmers from lucrative corporate supply chains if registration processes remain complex. Compliance will now be a primary determinant for market access.