A method for transferring longevity comprising: receiving an order to trade a financial instrument associated with at least one asset or liability affected by longevity risk; calculating a morbidity description for at least one age of each individual, a survivorship distribution and a mortality distribution, a net cash flow projection distribution, where each distribution value in the net cash flow projection distribution is computed as the probability-adjusted cash in-flow expected over a period, less the probability-adjusted cash out-flow expected over the same period; calculating a net present and net forward value distribution; accepting starting and ending dates over which counterparties wish to exchange the difference to provide at least one exposure period; accepting an input for computing a performance bond; receiving through a computing device, over time, updated mortality information and morbidity information; and recalculating distributions affected to provide recalculated distributions; calculating the difference to be exchanged.