Ages start earlier than you think
Many programs begin at 50-55, not 65. Membership organizations for older adults publish discount lists.
Groceries and retail run senior days
Weekly senior-discount days at grocers and thrift chains stack with sales.
Transit, parks and utilities
Reduced transit fares, the lifetime national-parks senior pass, and utility senior rates are official and substantial.
Property-tax relief is the big one
Most states run senior homestead exemptions, freezes or deferrals — hundreds to thousands yearly via one county form. See Resources.