This form should be included with your completed DR 0106 form. A partnership or S corporation that has made a SALT Parity Act election is subject to the same requirements for estimated tax payments as C corporations. In general, an electing partnership or S corporation must remit four quarterly estimated tax payments if its net Colorado tax liability for the tax year exceeds $5,000. The electing partnership or S corporation can calculate its estimated tax payments based on its net tax liability for the preceding year only if it made a SALT Parity Act election for that preceding tax year.