For tax purposes, taxpayers are authorised to use any of the following methods for valuing stocks (i.e. inventory), provided they technically fit the taxpayers' business and are consistently applied:
- Cost of production.
- First in first out (FIFO).
- Weighted average.
- Historical price of assets.
- Estimated cost at a fixed price (additional for livestock activities).
The regime of capital income, capital gains, and capital losses is established with the following tax rates:
- Real estate equity income: 10%.
- Income from trading movables: 10%.
- Capital gains and losses: 10%.
- Incomes from lotteries and raffles: 10%.
Capital losses can be netted only against capital gains, up to a maximum of two years.
Dividends earnings and profits are subject to a 5% income tax.
All interest income is subject to a 10% income tax.
Royalties are taxed at a 15% WHT rate.
Foreign-source income received by a domestic corporation is non-taxable under Guatemalan income tax law, provided that it does not relate to a service or activity rendered in Guatemalan territory.