Sweden - 1972 Party Finance Law

Title Section 3
Chapter Party support
Article

3

The number of per seat contributions that each party receives is determined annually, taking account of the outcome of the two most recent general elections. Unless Section 4 states otherwise.
In the first year of the three-year period that follows elections to the Swedish Parliament each party receives per seat contributions corresponding to one sixth of the number of seats won in the most recent election, plus five sixths of the seats won in the immediately preceding election. In the second year, the party receives per seat contributions that correspond to half the number of seats won in the most recent election plus half the number of seats won in the immediately preceding election. In the third year, the party receives per seat contributions that correspond to five sixths of the number of seats won in the most recent election plus one sixth of the number of seats won in the immediately preceding election.
If a party has not won representation in the Swedish Parliament in either election, for that election the number of full tenths of a percentage point of votes over 2.5 per cent that the party received nationwide are counted instead of seats. If a party has won representation in the Swedish Parliament in either election but has not received four per cent of the votes nationwide for that election, both the number of seats and the number of full tenths of a percentage point of votes over 2.5 per cent are counted. However, if the total number of seats and tenths of percentage points of votes over 2.5 per cent exceed fourteen, the surplus amount is not counted.

Categories - Party finance (Direct public funding)
Source http://www.sweden.gov.se/content/1/c6/10/78/60/b7508720.pdf