How Capital Gains Tax Is Calculated in Cambodia

When foreign owners come to resell a Phnom Penh condominium, capital gains tax is often the part they understand least. A common worry is that the tax applies to the whole sale price. In Cambodia, as in most systems, that is not how it works. The tax is built to fall on the profit you make, not on the full sum that changes hands, and once that is clear the subject becomes far less daunting.

What a capital gain actually is

A capital gain is the difference between what you sell an asset for and what it genuinely cost you to acquire and hold. The useful question is not how much the buyer paid, but how much profit you made after your documented costs. That net figure is the whole point of the exercise, and it is usually a good deal smaller than the headline sale price suggests. For an owner who has held a unit for several years, the original purchase price and any genuine improvements tend to soften the final figure further, which is why long-held resale property often produces a calmer outcome than the headline rate implies.

Cambodia's framework is structured around net gains rather than gross values. You take the sale price, subtract the original purchase price, then subtract allowable and documented costs, and what remains is the net gain. The rate discussed for the regime is 20 percent, applied to that net figure and never to the full sale price. The introduction of capital gains tax on property has also been deferred to 1 January 2027, so current resale transfers still sit under the usual transfer tax of 4 percent. Always confirm the rules in force on your sale date.

What counts as a cost

• The purchase price shown on your transaction documents
• Fees paid directly to buy and register the unit
• Improvements that materially upgrade the property, not routine repairs
• Other ownership costs that may be recognised, depending on the records you keep

Why documentation is the real advantage

In a capital gains calculation, documentation is leverage. Owners who keep purchase and sale agreements, proof of payment, improvement invoices and official receipts are ready if the rules apply to their sale. This is not aggressive tax planning, it is simply evidence of what happened, and it is the difference between a clean figure and a dispute. Short-term resellers feel this most, because small differences in recorded costs can move the net gain sharply over a brief holding period. Because treatment turns on the detail of each sale, we suggest taking independent, Cambodia-qualified tax advice well before you exchange.