If you have a question about how to complete your return, call 1-800-400-7115. The following services make it easier to file your returns and pay your taxes.2) Submit your estimated tax payment via the Official Payments site. 3) Complete estimated payment voucher Form 540-ES. Filing a late tax return is one of the most common reasons that a large number of taxpayers owe money to the FTB. I got a job here in California in November and have been working there since. Set up an installment agreement with the IRS. A surefire way to pay less taxes in California is to reduce your business expenses. Bonsai Tax can help.