Why am I charged for AWS each month??

There are several potential reasons why you might be seeing a small monthly charge on your AWS account, even if you believe you're not actively using any services:

1. Hidden or forgotten resources: You may have some small resources running that you've forgotten about or that aren't immediately visible in the main console. These could include things like EBS volumes, snapshots, or Elastic IP addresses that weren't properly deleted when you terminated EC2 instances.

2. Resources in different regions: AWS operates in multiple regions worldwide. It's possible you have a small resource running in a region you don't typically use or check.

3. Data storage: Even if you're not actively using services, you might have some data stored in services like S3 or EBS snapshots that incur small storage fees.

4. Free Tier expiration: If you initially signed up for the AWS Free Tier, some services become billable after the 12-month period expires, even if usage is very low.

To resolve this issue:

1. Log into your AWS Management Console and use the Cost Explorer tool to identify which specific services are generating the charges.

2. Check all AWS regions for any active resources.

3. Look for things like unattached EBS volumes, old snapshots, or Elastic IP addresses not associated with running instances.

4. If you can't find the source of the charges, consider contacting AWS Support for a detailed explanation of your bill.

5. If you're certain you don't need the account anymore, you can close it to prevent future charges. However, make sure to properly terminate all resources first to avoid any final unexpected charges.

Remember, even small charges can add up over time, so it's good to address this to ensure you're not paying for services you don't need or use.
Sources
Why am I getting charged although I deleted my instances and volumes a few weeks ago? | AWS re:Post
Charge for EC2 after i remove all resources | AWS re:Post
What is AWS and why am I being charged for it | AWS re:Post