Assessment of firms requires a certified partnership instrument specifying partner shares; revised instruments must be filed on change.

Assessment as a firm is required where a partnership instrument evidences the partnership and specifies partners' individual shares; a certified copy of that instrument must accompany the firm's return when assessment as a firm is first sought, certified in writing by all partners (excluding minors) or, after dissolution, by former partners and legal representatives of deceased partners. A firm assessed as such remains so unless the constitution or shares change, and if changes occur a certified revised instrument must be filed. Certain failures by the firm trigger denial of deductions for payments to partners and render those payments not chargeable under the referenced provision.

---

---

---