The counter claim/counter petition fees vary by court type.
For Family (DR) cases the fee is $295
For Circuit Civil (CA) typically the fee is $395 unless its a foreclosure case in which you pay a graduated filing fees based on value of claim: If the claim is < $50,000.00 then the fee is 395.00, if the claim is > $50,000.00 but < than $250,000.00 the fee is $900.00 and if the claim is > $250,000.00 then the fee is $1,900.00.
For Small Claims (SC) if the initial SC statement of claim AND counter claim together total < $2,500.00 there is no filing fee for the counter claim. If the counter claim is > $2,500.00 OR if the counter claim brings the initial claim amount to > $2,500.00 the fee is $295.00.
For County Civil (CC) the fee $295 unless the counter claim is over $15,000.00. In that case the counter claim would be used to open up a new CA case and the new case filing fee of $400.00 would be charged.