A projected 3.9% Social Security COLA adjustment is making headlines — but millions of retirees don't need to wait until October to protect their purchasing power. The projected Social Security COLA increase comes after inflation accelerated sharply during March and April. Prices are now rising at their fastest pace in nearly three years. Meanwhile, many traditional savings accounts still pay less than 0.40% interest. In real terms, that means savers are often losing money slowly without noticing it.

A senior citizens group said that Social Security payments could rise by nearly 4 percent next year...

Social Security recipients may be in line for a 4% COLA adjustment. Here's how they can earn 4% on their savings now.