When governments issue bonds they deposit the bond proceeds (and occasionally other monies) in various funds, which may include a construction fund, debt service fund, capitalized interest fund, debt service reserve, or in the case of a refunding, an escrow fund. In some cases these funds may be held by a third party trustee. Monies allocated to these funds usually are invested until needed. The investment strategy for each fund will depend, in part, on federal or state statutes and regulations governing the types of instruments permitted to be used for the investments, the arbitrage yield permitted for the fund, requirements from rating agencies and/or credit enhancement providers, and the anticipated drawdown of bond proceeds. Additionally, each of these funds will have different investment objectives, so there are many factors that must be considered by the government when selecting the investment instrument. Governments need to be mindful that cash flow analyses are critical components of the process and are useful in reducing the possibility of negative arbitrage that may occur. Furthermore, the presence or lack of arbitrage could affect the entire structure and sizing of the debt financing.