EC2 t2.micro unexpected charging in AWS

I'm having a hard time understanding why I am being charged on a EC2 instance I'm not running. I'm using a IAM account, I have an RDS t3.medium up on the master account where the RDS cost is charged, but it appears I'm being charged as my IAM account for a EC2 I dont' use.

So what may be causing this ec2 charging?

Solution

You are being charged for a t2.micro Amazon EC2 instance in the Ohio region because such an instance is/was running.

If you are still in the first 12 months of your AWS Account, there will be no charge for this instance because the AWS Free Tier includes 750 hours per month of a t2.micro instance.

You should look in the EC2 management console for Ohio, just to check whether the instance is still running.