How much auto insurance premium go up after an accident?

I have progressive, and like most insurance companies, I renew my coverage every 6 months. I got into an accident that was not my fault around six months ago. My premium did not change a bit, but my last moving violation was almost three years ago, and the last accident I had before this was at least three years ago. If you don't have multiple accidents and moving violations, they could simply forgive this accident. It's a lot more specific than you might think. You really should talk to your insurance company, but any increase (if it happens) usually won't take place until it's time to renew. 8 months ago Thank You!