https://ttlc.intuit.com/community/taxes/discussion/ftb-5805-question-error/01/3901664#M1452353 <P>Have just uploaded (or so says my Win-11 based copy of TT 2025 Premier), a diag copy of tax file.</P><P>Diag file token: [removed]-69994031 (if anyone from Intuit patrols this board).</P><P>Filing shows penalty for failing to pay quarterly in 2025 based on 2024 filing.&nbsp; (This much is correct: my bad, I missed noticing the requirement).&nbsp; That said, I'm trying to match the TT output and calcs with the FTB form and instructions for 5805. Concession: Calif. has made this massively complicated - not Intuit's fault.&nbsp; Still, though TT spits out a penalty $ number at bottom of 5805, there are so many blank lines above it (blank for unknown reasons), I cannot figure out how TT arrived at its result.&nbsp; And I cannot duplicate it when I try to do the calcs by hand using the published 5805 instructions.&nbsp; I would like to see a 5805 that is actually completed (show-your-work style), with a bottom-line result (whatever it is) that can be reproduced and substantiated.</P><P>This is for current year (TY2025); I see some threads re 5805 a year that, my case "feels" similar to some. FYI.</P> Thu, 16 Apr 2026 22:30:47 GMT JJK2 2026-04-16T22:30:47Z https://ttlc.intuit.com/community/taxes/discussion/ftb-5805-question-error/01/3901664#M1452353 <P>Have just uploaded (or so says my Win-11 based copy of TT 2025 Premier), a diag copy of tax file.</P><P>Diag file token: [removed]-69994031 (if anyone from Intuit patrols this board).</P><P>Filing shows penalty for failing to pay quarterly in 2025 based on 2024 filing.&nbsp; (This much is correct: my bad, I missed noticing the requirement).&nbsp; That said, I'm trying to match the TT output and calcs with the FTB form and instructions for 5805. Concession: Calif. has made this massively complicated - not Intuit's fault.&nbsp; Still, though TT spits out a penalty $ number at bottom of 5805, there are so many blank lines above it (blank for unknown reasons), I cannot figure out how TT arrived at its result.&nbsp; And I cannot duplicate it when I try to do the calcs by hand using the published 5805 instructions.&nbsp; I would like to see a 5805 that is actually completed (show-your-work style), with a bottom-line result (whatever it is) that can be reproduced and substantiated.</P><P>This is for current year (TY2025); I see some threads re 5805 a year that, my case "feels" similar to some. FYI.</P> Thu, 16 Apr 2026 22:30:47 GMT https://ttlc.intuit.com/community/taxes/discussion/ftb-5805-question-error/01/3901664#M1452353 JJK2 2026-04-16T22:30:47Z