The following is an overview of COBRA election and payment rules. Election rules:
Qualified beneficiaries have 60 days to elect COBRA coverage (from the later of the notice date or coverage loss date)
After electing, they have 45 days to make the first premium payment
Subsequent premiums are due monthly, with a 30-day grace period
Payment Rules
Regarding the initial premium payment: The plan must provide at least 45 days from the date of election for the first premium payment, and not require payment at the time of election
Regarding the subsequent premium payments: After the first payment, premiums may be due periodically (typically monthly)
Regarding the premiums charged: For most qualified beneficiaries, the premium may be up to 102% of the cost of coverage for similarly-situated active employees (i.e., employee + employer share + up to 2% admin fee); for a disability extension (months 19-29), the premium may be up to 150% of the plan's cost
Note that the plan must provide a minimum 30-day grace period for each payment period