Some plans offer guaranteed level premiums that stay the same for the "Term" (duration) of your coverage.
While other term life plans may offer coverage with premiums that increase every 5 years while your policy is In Force.
However, the most common type of term life policy is Level Term, which means you pay the same premium each year for the entire duration of your coverage.
But, if you need life insurance after your original term expires, and you still need life insurance, you would need to renew your policy, or buy a new policy, either way, your premiums would increase from the cost of your original term life insurance policy.
Learn more about whether or not term insurance premiums increase.