I’m having the same problem, I was supposed to receive a federal refund with the amount of $1,927 then the irs made changes left me with $1,127 and now I recently got a deposit for only $480 why is that?
See this
https://blog.turbotax.intuit.com/tax-refunds/why-is-my-tax-refund-not-what-i-expected-49240/