The Poljica Statute, from 1440, is the most important historical source for the Republic of Poljica. The statute determined the law of Poljica, which is, by its form, style, content and establishment of social-economic relations, is totally different from the rest of Croatian statutes.
It is written in short, picturesque sentences that include the norms of Poljica's society from the highest political authorities to the norms that include all Poljicians' interests. Besides the laws written in this statute, the Poljica Statute also contains various decisions and verdicts of authority that, in a few occasions, refer to individuals.
The Poljica Statute was changed as the society of Poljica changed. Another important value of the Poljica Statute is its archaic form, from which one can study the people from Poljica at the time and the people of Croatia in general. Typical features of the Poljica Statute are guarantees of freedom but also acceptance of responsibility to protect Poljica.
The Poljica Statute is a document of priceless value. Besides learning matters of law, it is possible to study historical, economical, political and other social relations from that time. The Poljica Statute was the result of the wish of the people of Poljice for stronger independence from the Kingdom of Croatia and the Republic of Venice. For that time, the Poljica Statute shows a great level of legal professionalism and consciousness of society. The earliest script from the 13th century Poljica Statute is written in Cyrillic. The language of the monument is a mixture of the receding Čakavian dialect and increasingly mode widespread Štokavian dialect and, given that Glagolite clergymen contributed to the text, a considerable number of Church Slavonicisms is present.
The Poljice Statute had some redactions. All redactions occurred at turning points when the Republic of Poljica needed to recognize a new ruler. In the time of the House of Šubić, Poljicians had no need for a statute because they had common interests and goals. The first redaction occurred in 1322 when 18 articles were written which referred to Charles I of Hungary, but he did not accept the statute. This was also confirmed by the charter of Queen Elisabeth of Poland in 1333 in which she mentioned the Poljica Statute.