Here are the two formulas I've tried:

```
=IF(B13<600000,B13*3%,IF(B13>600000,600000*3%+(B13-600000)*4%,IF(B13<1000000,B13*4%,IF(B13>1000000,1000000*4%+(B13-1000000)*5%,IF(B13<1500000,B13*5%,IF(B13>1500000,1500000*5%+(B13-1500000)*6%))))))
=IF(B13<600000,B13*3%,IF(B13>600000,600000*3%+(B13-600000)*4%,IF(B13>1000000,600000*3%+(400000*4%)+(B13-1000000)*5%,IF(B13>1500000,600000*3%+(400000*4%)+(500000*5%)+(B13-1500000)*6%))))
```

This is the information I'm using to get the numbers that aren't equalling the correct number.

```
Jan 117,223
Feb 115,340
Mar 126,307
Apr
May
Jun
Jul
Aug
Sep 641500
Oct
Nov
Dec
TOTAL 1000370
600,000 3%
1,000,000 4%
1,500,000 5%
```

34014.8 <- should be $34,019

Everything is good until 1 million but after 1 million it's not calculating at 5%.