I am a new user to the platform and I recently staked some PRV, but the earnings do not seem to be adding up to 57% APR.

Some background - I am trying to create a record that shows the number of PRV earned each day, so then I am able to calculate my income for the day as well as my tax basis in the PRV earned each day for United States tax reporting purposes.

I staked 1,041.952200 PRV on Sunday, May 3 at 7:19 PM EST.

I am no Excel wizard or anything, but my understanding is that the following function should provide the end of the day balance of PRV for a full day of staking:

=(prior day’s ending balance)*(1+(0.57/31536000))^((1/365)*31536000)

However, this function produces results that are not consistent with what I have been earning.

I also took a look at user Rick_Shah’s simple staking pool interest calculator and adopted the use of the FV function on a separate spreadsheet. This produced results very close to what were produced by my equation above.

Please note, given that my first day was a partial day, I calculated a full day’s earnings and then multiplied that by (281/1440), which should approximate what the partial day earnings should have been. I used that ending day balance in both of the computations I mentioned above with the same result - a discrepancy.

Finally, when I substitute 44.9% APR instead of 57% APR the results are close to my actual returns.

At exactly midnight this morning (5/6/2020), my PRV balance was 1,044.770087.

Does anybody have any thoughts about what is going on? I would be really pleased to find out that there is actually an error in my computations.