IRS Safe Harbor Affordability Calculation Form - 2023 Form/Letter Affordable Care Act (ACA) Download Now Must be a member to download. Please log in. Learn how to get access. Download Use this spreadsheet to calculate affordability under the various IRS safe harbors. Insert your own numbers to prompt the calculations. Related Resources Affordable Care Act (ACA) Toolkit Toolkit Affordable Care Act (ACA) Download Talent Report+ April 2024 Guide Leadership & Management & Supervision Talent Management Talent Report+ March 2024 Guide Talent Management