Michael Jackson Flunked His Credit Report

Here's a shocker -- Michael Jackson had an abysmally low credit score.

TMZ has learned that in 2007, Jacko's average credit score was 563.67 (Equifax 592, Transunion: 524, Experian: 575) which most experts consider very low. (According to creditreport.com, the average credit rating for people in California is 672.)

The reasons for MJ's credit woes ... We're told he was dinged for several reasons, including:

-- A derogatory public record or collection filed
-- The amount owed on delinquent accounts
-- Number of accounts with delinquency
-- Too many inquiries in the last 12 months

We've also learned Barneys New York actually shut down Jacko's credit line after he racked up more than $224,000 in one billing cycle, this according to Jacko's credit report.

MJ's troubles seem to have stemmed from a large net worth but nearly no disposable income. As we reported earlier, MJ's "Cash in Bank" was $668,215 -- or .05% of his net worth.