1. A multi-computer system to make financial analysis outputs, the multi-computer system including: a first computer system to generate a market-based valuation of property, the property comprised of at least one tax-exempt fixed-income security, the market-based valuation reflecting one of an expected return under a performance scenario, a price, and a quantitative description of risk, as part of a financial analysis output; and a second computer system to receive at least some of the financial analysis output as input, to generate using at least some of said input a second market-based valuation reflecting computation of a current market-based yield/discount rate for the property, and to produce a second financial analysis output including the second market-based valuation.