Purchasing real estate in the Philippines involves navigating a precise web of statutory taxes, local government assessments, and contractual obligations. Far too often, buyers focus solely on the "selling price" listed by the owner or developer, only to face significant financial hurdles when closing the deal or maintaining the property.

Understanding how a lot’s final purchase price is computed and how annual property taxes are assessed under Philippine law is critical to protecting your investment and ensuring regulatory compliance.

1. Computing the Total Contract Price (TCP)

The base amount agreed upon by a buyer and seller is the Selling Price (SP). However, the Total Contract Price (TCP)—the actual amount a buyer spends to fully acquire and title the property—incorporates several mandated transactional taxes and fees.

Responsibility for these expenses is typically split between the buyer and the seller, governed by standard real estate practices or explicit stipulations in the Deed of Absolute Sale (DOAS).

Seller’s Typical Obligations

By default law and common market practice, the seller handles the expenses tied to the disposal of the asset:

Capital Gains Tax (CGT): Equivalent to 6% of the gross selling price or the zonal value (set by the Bureau of Internal Revenue, or BIR), whichever is higher. This applies to ordinary individuals selling residential lots classified as capital assets. If the property is owned by a corporation or classified as an ordinary asset (e.g., used in business), it is subject to Creditable Withholding Tax (CWT) and Value-Added Tax (VAT) instead.
Real Estate Broker’s Commission: Typically ranging from 3% to 5% of the selling price.
Unpaid Real Property Taxes: Any arrears on the property up to the exact date of execution of the sale.

Buyer’s Typical Obligations

The buyer generally absorbs the costs associated with transferring the title into their name:

Documentary Stamp Tax (DST): Set at 1.5% of the actual selling price, zonal value, or fair market value, whichever is highest.
Transfer Tax: Imposed by the local government unit (LGU) where the property is located. It ranges from 0.50% (in provinces) to 0.75% (within Metro Manila) of the highest value among the selling price, zonal value, or assessed value.
Registration Fee: Paid to the Registry of Deeds for the issuance of the new Transfer Certificate of Title (TCT). It follows a graduated table of fees published by the Land Registration Authority (LRA), usually averaging around 0.25% of the property value.
Incidental Expenses: Notary fees for the Deed of Sale (usually 1% of the selling price) and miscellaneous administrative costs for handling the physical processing of documents across various government agencies.

Legal Caution: While these splits are standard practice, the National Internal Revenue Code (NIRC) allows parties to agree otherwise. Always explicitly review the "Tax and Expense Allocation" clause in your Contract to Sell before signing.

2. Real Property Tax (RPT): The Annual Obligation

Once ownership is successfully transferred, the buyer assumes the ongoing obligation of paying Real Property Tax (RPT), colloquially known in the Philippines as amillaramiento. Governed primarily by Republic Act No. 7160 (The Local Government Code of 1991), RPT is a direct tax levied by LGUs on the administration and ownership of real property.

How RPT is Computed

RPT is not calculated directly from the market price or the BIR zonal value. Instead, it relies on a specific metric determined by the local Assessor’s Office: the Assessed Value.

The formula for the basic annual property tax is as follows:

$$\text{Basic RPT} = \text{Assessed Value} \times \text{RPT Rate}$$

To get to this final number, the LGU applies two main steps:

Step 1: Establish the Assessed Value

The Assessed Value is derived by multiplying the Fair Market Value (FMV)—as specified in the LGU's Schedule of Market Values—by the statutory Assessment Level fixed by a local ordinance.

$$\text{Assessed Value} = \text{Fair Market Value} \times \text{Assessment Level}$$

Under Section 218 of the Local Government Code, maximum assessment levels for vacant or residential lots are strictly capped. For residential land, the maximum assessment level is 20%, meaning only a fifth of the LGU's appraised value of your lot is actually subject to taxation.

Step 2: Apply the RPT Rate

The basic tax rates are mandated by law based on location:

Metro Manila (Cities and Municipalities): Up to a maximum of 2% of the assessed value.
Provinces (Outside Metro Manila): Up to a maximum of 1% of the assessed value.

The Special Education Fund (SEF) Tax

In addition to the basic RPT, Section 235 of the Local Government Code authorizes LGUs to levy an additional annual tax of 1% on the assessed value of real property. The proceeds of this tax go directly to funding local public schools.

Therefore, your total annual property tax rate effectively shifts to a maximum of 3% in Metro Manila and 2% in the provinces.

3. RPT Deadlines, Discounts, and Penalties

Property taxes accrue on the first day of January each year. Property owners have the option to pay the entire year's tax upfront or in four equal quarterly installments:

1st Quarter: On or before March 31
2nd Quarter: On or before June 30
3rd Quarter: On or before September 30
4th Quarter: On or before December 31

Tax Discounts

To encourage prompt compliance, LGUs offer significant discounts—often ranging from 10% to 20% of the total tax due—if the RPT is paid in full before the calendar year begins or ahead of the quarterly deadlines.

Penalties for Non-Payment

Failure to pay RPT on time triggers a heavy statutory penalty: an interest rate of 2% per month on the unpaid amount, up to a maximum cap of 72% (equivalent to 36 months of delinquency).

Under the law, continued neglect allows the local government to declare the property delinquent, issue a warrant of levy, and ultimately sell the lot at a public auction to satisfy the tax debt.

Summary Reference Table

Tax / Fee Component	Rate / Basis	Primary Payer (Standard Practice)
Capital Gains Tax (CGT)	6% of Selling Price or Zonal Value (whichever is higher)	Seller
Documentary Stamp Tax (DST)	1.5% of Selling Price or Zonal Value (whichever is higher)	Buyer
Local Transfer Tax	0.50% (Provinces) to 0.75% (Metro Manila) of property value	Buyer
Registration Fees	Graduated scale (~0.25%) paid to Registry of Deeds	Buyer
Annual Basic RPT	1% (Provinces) or 2% (Metro Manila) of Assessed Value	Owner (Current)
Annual SEF Tax	Additional 1% of Assessed Value	Owner (Current)