Poland's effective corporate tax rate doubles nominal, set to rise further in 2027

The effective tax rate for listed companies in Poland has been rising for four years and now stands at roughly twice the 19% nominal CIT rate. A further increase in the statutory CIT rate is scheduled for 2027, which will likely weigh on corporate earnings and equity valuations. The trend signals a deteriorating fiscal environment for Polish businesses, though the exact magnitude of the 2027 hike is not specified.