My tax liability for California 2016 is $641.00. Am I required now to make quarterly payments as an single individual??? There are vouchers with my documents but no info.

[chiefbeth1]

There was no information with the vouchers. It it mandatory if I exceeded the $500.00 tax due threshold just once?

[AnthonyC · Accepted solution]

No.  You are not required to make the payments.  The program produces these forms as a convenience for you to make the payments.  You are not locked into those payments.

The program will produce them automatically if you owed tax as the government requires you to withhold enough tax to cover your tax liability or make estimated tax payments.  If you don't have enough withholding and you don't make estimated tax payments, then the IRS or your state can charge you with an underpayment penalty.

Sounds like you are saying you don't expect to owe that amount again next year.  If you owed tax this year because of a one-time event and you won't owe next year, then you can decline to send any payments.  You can also decline to send the payments even if you will owe tax next year, but you may be assessed an underpayment penalty if you fail to make the payments.