IPSA is an independent organization that regulates and administers the business expenses and staffing costs of UK's elected Members of Parliament (MPs) and their staff. In response to the MPs’ expenses scandal in 2009, IPSA was established to ensure transparency and appropriate use of public funds. At IPSA, decisions regarding MPs' pay, pensions, and business costs are made independently from Parliament.

Contrary to popular belief, MPs don't have the power to determine their own pay or business costs. IPSA takes this responsibility and ensures that MPs can only claim for costs incurred while performing their parliamentary duties. Business costs, such as train tickets, printer cartridges, and staff salaries, aim to support MPs in their roles and are not to supplement their salaries.

The majority of funding allocated by IPSA actually goes towards MPs' staff and constituency offices. Around 90% of the money is invested in local communities through caseworkers and parliamentary assistants who assist constituents and represent them in Parliament. MPs are bound by rules set by IPSA, which include limitations on personal expenses during their normal working day.

All claims are regulated by IPSA and must adhere to principles of parliamentary purpose, value for money, accountability, and probity. Detailed information about MPs' staffing and business costs can be found on IPSA's website. IPSA remains committed to safeguarding public money and making informed decisions about MPs' salaries.

They also provide information and guidance on MPs' claims and maintain transparency through their publication schemes. Contacting IPSA is easy, and they are dedicated to addressing any complaints or feedback