Poland's membership of the EU will involve economic integration across a va
riety of fields, with important potential implications for the external env
ironment in which business is conducted in Poland. These implications stem
first from the need to adapt Polish legislation, regulatory systems, and me
thods of certification and standards to EU requirements; and, second, from
the continuing process of transforming the Polish economy into a market-bas
ed system. Although integration processes have important potential implicat
ions for Polish firms of all sizes, it can be argued that there are size-re
lated characteristics of SMEs that can affect their ability to cope with po
tential threats and respond to new opportunities presented. The paper draws
on two studies commissioned by the Polish SME Foundation, in which the aut
hors were involved. The first was concerned with a comparison of the condit
ions for SME development in Poland with those in EU member states; the seco
nd specifically with the implications of accession for Polish SMEs. In this
context, the paper considers three key questions: (1) What are the main so
urces of threat and opportunity for Polish SMEs, arising out of EU membersh
ip? (2) What are the main implications for Polish and EU policymakers? (3)
To what extent are the implications of Poland's accession to the EU similar
to or different from the issues faced by SMEs in the United Kingdom at the
time of Single Market completion?.