# Reduced correction window when purchasing AWS Savings Plans late in the month Canonical: https://www.pointfive.co/efficiency-hub/inefficiencies/reduced-correction-window-when-purchasing-aws-savings-plans-late-in-the-month Savings Plans are purchased within the final days of a calendar month, reducing or eliminating the ability to reverse the purchase if errors are... By: Benjamin van der Maas Updated: 2026-09-28 [Cloud Efficiency Hub](https://www.pointfive.co/efficiency-hub) # Reduced Correction Window When Purchasing AWS Savings Plans Late in the Month The short version Savings Plans are purchased within the final days of a calendar month, reducing or eliminating the ability to reverse the purchase if errors are discovered. [Benjamin van der Maas](https://www.linkedin.com/in/benjamin-van-der-maas-71168466/) Manager, Cloud FinOps @ Johnson & Johnson AWS service [AWS Savings Plans](https://www.pointfive.co/efficiency-hub/cloud-services/aws-savings-plans) Category [Compute](https://www.pointfive.co/efficiency-hub/service-category/compute) Reference CER-0285 Type Underutilized Commitment ## Explanation Why the waste happens and who it affects. Because the refund window is constrained to both a 7-day period and the same month, late-month purchases materially limit correction options. This increases the risk of locking in misaligned commitments (e.g., incorrect scope, amount, or term), which can lead to sustained underutilization and unnecessary long-term spend. ## Billing model The pricing dimensions that drive this cost. Savings Plans are billed as a fixed hourly commitment. Savings Plans with an hourly commitment of $100 or less can be returned for a full refund of upfront charges, but only within 7 days of purchase and within the same calendar month (the month ends in UTC time), up to 10 returns per calendar year per management account, and only from the same management account that purchased the plan. ## How to detect 3 checks to find it in your estate. - Review the timing of Savings Plan purchases relative to month-end - Identify commitment purchases made within the final 7 days of a month - Assess whether review and validation processes allow sufficient time for correction ## How to fix 3 ways to remove the waste. - Establish an internal cutoff that avoids Savings Plan purchases late in the month - Incorporate purchase date as a required validation check during commitment reviews - Plan commitment actions earlier in the month to preserve the full correction window ## Documentation Vendor references for pricing and configuration. - [Returning a purchased Savings Plan - Savings Plans docs.aws.amazon.com](https://docs.aws.amazon.com/savingsplans/latest/userguide/return-sp.html) - [Quotas and restrictions - Savings Plans docs.aws.amazon.com](https://docs.aws.amazon.com/savingsplans/latest/userguide/sp-quotas.html) - [Savings Plans FAQ aws.amazon.com](https://aws.amazon.com/savingsplans/faqs/) ## Related inefficiencies [Browse the library](https://www.pointfive.co/efficiency-hub) - AWS Savings Plans CER-0304 ### [Overcommitted Savings Plans After Temporary AI Inference Demand Spikes](https://www.pointfive.co/efficiency-hub/inefficiencies/overcommitted-savings-plans-after-temporary-ai-inference-demand-spikes) When organizations purchase AWS Savings Plans during periods of elevated AI inference demand - such as experimentation phases, feature launches, or early adoption surges - the committed hourly spend may significantly exceed what is needed... Compute - AWS Lambda CER-0290 ### [Unnecessary Lambda Provisioned Concurrency on Low-Utilization Functions](https://www.pointfive.co/efficiency-hub/inefficiencies/unnecessary-lambda-provisioned-concurrency-on-low-utilization-functions) Provisioned Concurrency is enabled for Lambda functions that do not require consistently low latency or steady traffic. In such cases, provisioned concurrency remains allocated and billed during idle periods, creating ongoing cost without... Compute - AWS EC2 CER-0151 ### [Underutilized EC2 Commitment Due to Workload Drift](https://www.pointfive.co/efficiency-hub/inefficiencies/underutilized-ec2-commitment-due-to-workload-drift) When EC2 usage declines, shifts to different instance families, or moves to other services (e.g., containers or serverless), organizations may find that previously purchased Standard Reserved Instances or Savings Plans no longer match... Compute --- Source: the public page above. Product screenshots and illustrative interfaces are examples, not live customer data.