Financial Glossary
Pro Rata
Pro rata is a Latin term meaning 'in proportion.' In finance and law, it describes the allocation of an amount among parties in proportion to each party's share, stake, or involvement in the whole. In venture capital, a pro-rata right (also called a preemptive right) gives an existing investor the right to participate in future financing rounds up to the percentage needed to maintain their current ownership stake. In insurance, pro-rata cancellation refunds premiums based on the fraction of the policy period remaining. In loan agreements, pro-rata payments distribute principal reductions proportionally across multiple lenders in a syndicated deal.
Problem & Application
Cap-table example: an angel investor owns 5% of a startup after the seed round ($500,000 invested at a $10M post-money valuation). The company raises a $5,000,000 Series A at a $20M pre-money valuation ($25M post-money). Without pro-rata rights, the angel's 5% stake dilutes to approximately 4% post-Series A. With pro-rata rights, the angel can invest up to $1,250,000 (5% of $25M post-money minus their existing $500,000 value) to maintain their 5% position -- but at a $20M pre-money price rather than the original $10M post-money, meaning they pay more per share to stay flat. Pro-rata rights are a standard term in seed and Series A side letters and are particularly valuable if the company's trajectory is strong. Real estate application: if a property is sold in October and property taxes are paid annually in arrears, the buyer is credited a pro-rata share of the year's taxes for the portion of the year the seller owned the property -- standard in closing settlement statements.
In Short
Pro rata is a fair method for distributing resources or ownership, ensuring that each participant receives a share proportional to their involvement.