The PAYGO compels new spending or tax changes not to add to the federal debt. Not to be confused with pay-as-you-go financing, which is when a government saves up money to fund a specific project. Under the PAYGO rules, a new proposal must either be "budget neutral" or offset with savings derived from existing funds. The goal of this is to require those in control of the budget to engage in the diligence of prioritizing expenses and exercising fiscal restraint.