Chapter 25. Financial Institution, Guaranty Company, and Public Utility Taxes. § 47–2501. Gas, electric lighting, telephone, telecommunications, and heating oil companies. § 47–2501.01. Television, video, or radio service to subscribers or paying customers. § 47–2502. Bonding, title, guaranty and fidelity companies. § 47–2503. Private banks. § 47–2504. Washington Stock Exchange. § 47–2505. Note brokers. § 47–2506. Payment of tax by private banks and note brokers. § 47–2507. Transitional rules for taxing financial institutions. § 47–2508. Applicability of acts of Congress to national banks in the District of Columbia. § 47–2509. Declaration and payment of estimated tax. § 47–2510. Personal property tax provisions applicable to financial institutions. § 47–2511. Severability. § 47–2512. Savings clause. § 47–2513. Rules and regulations. § 47–2514. Real property tax provisions applicable to financial institutions. § 47–2515. Effective date.