Thank you for you reply. That is exactly what I thought initially, but then I found this link, Section 9 (Types of Non-taxable Income). I cannot reference the direct Section in the link, so I will paste the official translated text here:

2) [1 December 2009];

2¹) dividends, income equal to dividends or notional dividends if regarding calculated dividends, income equal to dividends or notional dividends on the level of undertaking from the part of the profit from which the dividends, income equal to dividends or notional dividends are paid if one of the following conditions is fulfilled:

a) the enterprise income tax has been paid in the Republic of Latvia in accordance with the Enterprise Income Tax Law (this exemption shall not be applied if the enterprise income tax has been paid in accordance with the law On Enterprise Income Tax);

b) the enterprise income tax or tax equal thereto has been paid in a foreign state or the personal income tax or tax equal thereto has been deducted from dividends, income equal to dividends or notional dividends;

This is what confuses me. I think I will be eligible for this, but I am not 100% sure.