[jononomo]

When you hold on to someone's money for an extremely long time, do you earn any interest on that money?

[shrubble]

Yes, since it is all going into the same bank account... $600K on 9 months at 5% (best I see is 5.25% for 1 year https://www.bankrate.com/banking/cds/cd-rates/ ) would be 75% of $30K = $22.5K .