What You'll Pay to Empty a Septic Tank (2026 Quick Answer) The average cost to pump a septic tank in 2026 is $425, with most homeowners paying between $291 and $563 depending on tank size, location, and accessibility. Tank Size Typical Cost Range 500–750 gallons $175–$300 1,000 gallons $300–$500 1,250–1,500 gallons $375–$600 2,000+ gallons $600–$1,000+ A few things to keep in mind: Emergency or after-hours calls can cost 50–100% more than scheduled service. Rural locations ma