India, June 18 -- New long-range estimates say Social Security trust funds may last slightly longer than earlier expected. The Old-Age and Survivors Insurance (OASI) trust fund, which mainly pays retirement benefits, may run out by February 2033, according to new projections by the CNBC reporting analysis from Penn Wharton Budget Model (PWBM) at the University of Pennsylvania.

This is slightly later than the official Social Security trustees forecast, which says the same fund may last until the fourth quarter of 2032, according to the Social Security trustees report released on June 9. If OASI is combined with the disability insurance trust fund, depletion may move further to February 2035, as per the PWBM estimates.

The Social Security...