Vintage Year provides essential context for evaluating fund performance. By fixing a fund’s initial investment within a specific economic cycle, it allows investors to benchmark returns against funds launched in the same year, rather than in isolation. Economic conditions—such as market peaks or downturns, interest rates, and exit environments—directly affect fund outcomes. Internal Rate of Return (IRR) is sensitive to timing, and Vintage Year enables accurate interpretation of these returns. For Limited Partners, Vintage Year guides portfolio construction and diversification, ensuring exposure across economic cycles. It also informs re-up decisions, as consistent outperformance relative to peers within the same Vintage Year signals skill. Founders benefit from understanding Vintage Year because it influences a fund’s investment behavior, valuation approach, and exit expectations, helping align startups with the right investors. Ultimately, Vintage Year serves as a standard benchmarking framework for interpreting performance, risk, and opportunity across private equity and venture capital markets.