Use form FTB 3885, Corporation Depreciation and Amortization, to calculate California depreciation and amortization deduction for corporations. Attach a copy of Form(s) 593 to the lower front of your California tax return.Make a copy for your records. For example, a portion of the project financed with the bonds may be used for private purposes, changing the tax status of the debt from tax-exempt to taxable. The deduction should appear on your Form 100 similarly to the way it appears on the IRS Form 1120, and you should attach the form 3885. Create an account in the MySBA Loan Portal (lending.sba. Gov) to monitor your loan status or to make payments.