Billed for older free tier ec2 instance

I understand your concern about being billed for an EC2 instance you forgot about after your free tier period ended. Here's what you need to know:

Terminating the EC2 instance was the right first step to stop ongoing charges. However, it's important to be aware that there may be associated resources that could still incur costs:

1. Elastic IP addresses: If you had an Elastic IP associated with the instance and it's not attached to a running instance, you may be charged for it.

2. EBS volumes: Any Elastic Block Store (EBS) volumes attached to the instance will continue to incur charges for storage, even if the instance is terminated.

3. Snapshots: If you created any snapshots of the instance's volumes, these will continue to be billed for storage.

4. Data transfer costs: Any data transfer costs incurred by the instance will appear on your bill, even after termination.

To ensure you won't be billed again, it's recommended to:

1. Check for and release any unattached Elastic IP addresses.
2. Delete any unnecessary EBS volumes or snapshots.
3. Review your AWS account for any other resources you may have forgotten about in all regions.

You can use the EC2 Global View in the AWS Console to check for any remaining EC2 resources across all regions. Additionally, it's a good practice to regularly review your AWS Free Tier usage and set up billing alerts to avoid unexpected charges in the future.

If you're unsure about any remaining resources or charges, you can contact AWS Support for a detailed review of your account and guidance on removing any unnecessary resources.
Sources
getting charged on a free tier EC2 | AWS re:Post
I'm being billed for EC2 usage and I can't figure out why | AWS re:Post

When you terminate an Amazon EC2 instance, you are no longer charged for that instance from the moment it is terminated. However, you may still be charged for any associated resources, such as Elastic IP addresses, Elastic Block Store (EBS) volumes, and data transfer charges.

Since you have already terminated the EC2 instance, you should not receive any further charges for that specific instance. However, if you had any additional resources associated with that instance (EX. EBS volumes, Elastic IP addresses), you may still be charged for those resources until you delete or release them.

Here are the steps you can take to ensure you are not billed for any additional resources.

Check for Elastic IP addresses

• If you had an Elastic IP address associated with the terminated instance, you will continue to be charged for it until you release it. To release an Elastic IP address, follow below steps.

• Go to the Amazon EC2 console.

• In the navigation pane, choose "Elastic IPs".

• Select the Elastic IP address you want to release.

• Choose "Actions", then "Release Elastic IP address".

• Confirm the release by choosing "Release".

Check for EBS volumes

• If you had any EBS volumes attached to the terminated instance, you will continue to be charged for those volumes until you delete them. To delete EBS volumes, follow below steps.

• Go to the Amazon EC2 console.

• In the navigation pane, choose "Volumes".

• Select the volumes you want to delete.

• Choose "Actions", then "Delete Volume".

• Confirm the deletion by choosing "Yes, Delete".

Monitor your billing

• Even after terminating the instance and releasing/deleting associated resources, it's a good practice to monitor your AWS billing regularly to ensure you are not being charged for any unexpected resources.

you can refer to the AWS documentation on terminating instances . https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/terminating-instances.html https://aws.amazon.com/free/free-tier-faqs/