Most people ask their regular veterinarian to spay or neuter their pets.
It may operate a clinic or know of a local clinic that offers subsidized services. It may also offer vouchers to have your pet spayed or neutered at a lower cost by local cooperating private veterinarians. Call your veterinarian. Your veterinarian may be able to work out special financing options for you. Remember that, even if you pay full price for the procedures, spaying or neutering is a one-time cost with a lifetime of benefits.