Here are the latest available amounts from the Daily Treasury Statement. I think the 2019 figures include one more business day for March, which may account for the slightly lower amount of total refunds. Of course most of the 2020 returns would have been filed when Covid-19 was still a hoax. Comparing fiscal year totals, there is virtually no change.

Friday, March 20, 2020, vs. Friday, March 22, 2019

Month To Date (In Millions)

EFT           $51,832     $50,791      +2%

Checks     $ 6,622      $ 8,847      -25%

Total          $58,454     $59,638      -2%

Fiscal Year To Date (In Millions)

EFT            $174,914   $174,438   +0.3%

Checks       $ 27,790   $ 27,602    +0.1%

Total            $202,704 $202,040   +0.3%