Adding a secondary driver to a family policy almost always costs less than that driver purchasing a solo policy, but age determines how much you save. According to MoneyGeek's analysis, a 16-year-old on a Nationwide family policy pays $226 per month, saving $1,014 per year compared to the cheapest individual policy for that age.
Savings are largest for teen drivers and drivers 26 and older: GEICO's family policy saves drivers ages 26 through 35 roughly $430 to $478 per year versus a solo policy. The exception is ages 23 to 25, where the cheapest family-policy share actually exceeds the cheapest individual rate — at age 23, a Nationwide family policy costs $129 more per year than the cheapest solo GEICO policy.
A 40-year-old is the lowest-cost age to add to a family policy, at $82 per month through GEICO. Drivers younger than 26 and older than 60 cost more to add than a 40-year-old: a 16-year-old adds $1,735 more per year to a family policy than a 40-year-old would. Costs normalize by age 26, where a GEICO family policy costs just $70 less per year than the 40-year-old baseline.










