Download relevant Tax Collector forms. These include assessment removal, military property tax relief, Transient Occupancy Tax Exemption, and applicable forms.Declaration Form (FL-150) if you are requesting financial orders from the court. State income tax withholding (only required if withholding differs from your federal withholding amount). Register for a new Withholding Account using TAP. Go to TAP and follow instructions for registration. Please Download PDF BOE-262-AH REV. Select each field on the form below and type the required information. 3. Click all appropriate fields on the form to place a in the required boxes. 4. To accurately determine the correct amount of Massachusetts withholding, employers will rely on Massachusetts Form M4.