“You’re right: most car insurance carriers offer a discount for paying your premium in full.
To budget for this, figure out how many months are left before your policy renews and divide that number by your total policy premium. For example, if your policy renewal is in four months and your renewal price is $800, you’ll need to save an extra $200 every month ($800÷4).
To budget for your future policy terms, do the same thing. For example, if your policy still renews for $800, but your next term is 10 months away, you’ll only need to save an extra $80 every month.
Be aware that carriers do have the right to re-rate your policy at every renewal.Your rate may fluctuate and your savings may be less or more than the final amount you will owe. “