Calculate St Louis' per diem rate based on GSA guidelines to simplify your business travels.
As a major economic and cultural hub on the Mississippi River, St. Louis is a key destination for business travel in the Midwest. Home to major corporations, leading healthcare systems, and a vibrant research community, the city hosts a steady stream of professional visitors.
For organizations with employees traveling to St. Louis, a clear understanding of per diem rates is essential for managing expenses effectively. This guide provides a detailed look at the per diem rates for St. Louis, important Missouri laws for employers, and how to simplify the reimbursement process.
St. Louis is designated as a Non-Standard Area (NSA) by the U.S. General Services Administration (GSA), which means it has its own specific per diem rates that are higher than the standard U.S. rate. These rates are mandatory for federal employees and are widely used as a benchmark by private companies.
For Fiscal Year 2025 (October 1, 2024, to September 30, 2025), the rates are as follows:
St. Louis Area Rates (St. Louis City, St. Louis & St. Charles Counties)
It's important to note these rates apply to the City of St. Louis as well as all locations within St. Louis and St. Charles counties.
To easily determine the correct allowance for your trip to St. Louis, our per diem calculator provides instant and accurate results based on the official GSA schedule.
Private employers in St. Louis are governed by Missouri state law, which has a distinct approach to employee expense reimbursement.
The per diem framework for a private company employee in St. Louis is fundamentally different from the GSA system that governs federal employees.
For the high volume of business travel to a key Midwest hub like St. Louis, managing expenses efficiently is critical. A clear, consistently enforced policy is your best tool for compliance, and Fyle’s intelligent expense management platform is built to make that happen automatically.
Fyle helps you master St. Louis per diem and expense tracking:
With Fyle, you can confidently manage your St. Louis travel expense process, ensuring you meet your policy obligations while providing a modern, hassle-free experience for your employees.
The content on this page is for informational use. As legal standards and per diem rates are subject to change, users should verify current details with official GSA or government resources. This information does not serve as financial or legal counsel.
