To generate projections for agricultural production in Latvia until 2050, the Latvian Agricultural Sector Analysis Model (LASAM) was developed at the Latvia University of Life Sciences and Technologies in 2016. At that stage, the model generated projections for the so-called "activity data", which were used for projecting GHG (greenhouse gases) emissions from agriculture. Nevertheless, the model lacked socio-economic information, including the information on the necessary investment in agriculture and the aggregate value of fixed assets, which could be used for policy analysis and planning, especially within the context of debates about the new European Union (EU) Common Agricultural Policy (CAP) and the Rural Development Plan of Latvia 2021-2027. Within this research, LASAM was extended by a module for the value of fixed assets as at the end of a year and the amount of gross investment required to ensure the achievement of the projected area under crops, the projected number of livestock and the projected total agricultural output in Latvia until 2050. The aim of the research is to produce a projection of aggregate gross investment and of the aggregate value of fixed assets necessary for agriculture in the period until 2050 in Latvia. The research projected gross investments and the value of fixed assets. The authors have concluded that the aggregate gross investment in agriculture in Latvia is expected to increase to EUR 708 mln. in 2030, reaching an aggregate of EUR 1040 mln. in 2050, which are increases of 53 % and 128 %, respectively, compared with 2016, thereby also determining an increase in the aggregate value of fixed assets at the end of the year.