The paper presents an assessment of macroeconomic and also some selected structural consequences of the proposed fiscal consolidation necessary for Poland to fulfil the Maastricht fiscal criteria. The fiscal adjustments are assessed with a CGE model simulated over the 2006–2008 horizon. Two sets of simulations are analysed, namely rigid vs. flexible wages. It is shown that the fiscal tightening programme analysed in this paper does not necessarily incur any costs in terms of aggregate GDP loss in years 2006–2008. On the contrary, it may generate additional growth effects, provided that downward wage adjustments reduce unit labour costs, thus fostering the growth. It is concluded that the condition for the achievement of a smooth and relatively low-cost fiscal adjustment is to supplement it with labour market reform