Government instrumentality exempted from local taxation

A government instrumentality falls under Section 133(o) of the Local Government Code, which states:
SEC. 133. Common Limitations on the Taxing Powers of Local Government Units. - Unless otherwise provided herein, the exercise of the taxing powers of provinces, cities, municipalities, and barangays shall not extend to the levy of the following:

x x x x

(o) Taxes, fees or charges of any kind on the National Government, its agencies and instrumentalities and local government units. x x x.
Section 133(o) recognizes the basic principle that local governments cannot tax the national government, which historically merely delegated to local governments the power to tax. While the 1987 Constitution now includes taxation as one of the powers of local governments, local governments may only exercise such power “subject to such guidelines and limitations as the Congress may provide.”

When local governments invoke the power to tax on national government instrumentalities, such power is construed strictly against local governments. The rule is that a tax is never presumed and there must be clear language in the law imposing the tax. Any doubt whether a person, article or activity is taxable is resolved against taxation. This rule applies with greater force when local governments seek to tax national government instrumentalities.

Another rule is that a tax exemption is strictly construed against the taxpayer claiming the exemption. However, when Congress grants an exemption to a national government instrumentality from local taxation, such exemption is construed liberally in favor of the national government instrumentality.