A successful clinical trial will include a budget that adequately meets the financial needs of conducting a trial. Since costs vary across the nation for supplies, budgets are almost always negotiable. Sponsors usually use one of two options when presenting a budget. They may offer a certain amount per patient and ask that you work within that amount or they may ask you to formulate a budget for them. Regardless, it is the responsibility of the Principal Investigator (PI) to ensure that the amount agreed upon will adequately cover all costs associated with conducting a clinical trial.