Social Security calculation change 2026 boosts monthly checks: More money is finally reaching retirees. The Social Security calculation change 2026 has already delivered over $17 billion to 3.1 million Americans. This major update follows the repeal of WEP and GPO. It restores full benefit calculations. Average retroactive payments hit $587. Many now see monthly increases of $100 to $500. Some even cross $1,000 boosts. Public workers, spouses, and survivors gain the most. Payments now reflect real lifetime earnings. The Social Security Administration continues processing pending cases. More beneficiaries will see higher checks through 2026 as updates expand nationwide.