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Overview

AWS supports backfilling Cost and Usage Report (CUR) data for up to 36 months of historical data through a support case. This guide walks through the process and requirements, assuming that you have already enabled CUR reports previously.

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Prerequisites

Before requesting an AWS CUR backfill, ensure you have:
  • An active CUR or Data Export (CUR 2.0) previously configured
  • The exact Export Name or Report Name given in that previously configured set-up.
  • Your AWS Account ID ( Your Management/Payer Account)
  • Determined the billing periods you need backfilled (specific months/years, up to 36 months)

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Step-by-Step Process

Step 1: Gather Required Information Collect the below prerequisit details before attempting to open your support case.
  1. Account ID: The Management/Payer Account ID where the CUR is configured
  2. Export/Report Name: The name of your CUR or Data Export that you have previously configured:
    • For Data Exports: Found in Billing Console → Data Exports
    • For Legacy CUR: Found in Billing Console → Cost & Usage Reports
  3. Billing Periods: Specify the months you need backfilled
    • Example: “January 2024 through December 2024” or “Last 12 months”
    • Maximum: 36 months of historical data
  4. S3 Bucket: The destination bucket (usually auto-populated in the export configuration)
Step 2: Open an AWS Support Case
  1. Sign in to the AWS Console for the Management / Payer Account
  2. Navigate to Support → Support Center
  3. Using the new Support experience page, you will have to enter text into the AI request dialog box. Here is suggested text to put in that dialog box and then hit enter . 
    I need to request a CUR backfill
  4. The AI will come back with some information about CUR backfill. Then you can click the blue oval “Create a Case” button. This brings up a dialog that allows you to enter the following: 
    Subject: Request CUR Data Backfill for [Export Name]

Description: 

Hello AWS Support,

I would like to request a backfill of historical Cost and Usage Report (CUR 2.0) data for the following export:

- AWS Account ID: [Your Account ID]
- Export/Report Name: [Exact Export Name used in Subject above]
- Backfill Period: [e.g., "January 2024 through December 2024" or "Last 12 months"]
- S3 Bucket: [Your S3 Bucket Name / path]

Please confirm when the backfill is complete so we can begin processing the historical data.

Thank you!
  5. Under the Description box, Select_ _a Case type: Account and billing, Service: Cost and Usage Report (CUR), Category: Backfill a Report, Severity: General Question
  6. Also select a Communication preference for language and then click the Web.
  7. Click the blue oval “Submit” button
Step 3: Monitor
  • AWS typically processes backfill requests within 24 -48 hours.
  • You will receive email updates on the case progress.
  • Monitor your S3 bucket you designated for the backfilled data to appear.
  • Let Cloud Capital know that the data has arrived so we can import the new data into our app.

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Important Limitations

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What CAN Be Backfilled:

✅ Up to 36 months of historical data
✅ Data from the current AWS Organization structure
✅ Data from after the account creation date

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What CANNOT Be Backfilled:

❌ Data from before the AWS account was created
❌ Data with previous organization structures (if the management account changed)
❌ Data from before the account joined the current AWS Organization