A new European Commission convergence report published this week confirms that Poland still does not meet four of the five Maastricht criteria required to adopt the euro. The two most glaring failures are an elevated public finance deficit and long-term interest rates averaging 5.4 percent against the permitted threshold of 5.1 percent. Inflation over the 12 months to May 2026 came in at 2.9 percent, marginally above the 2.7 percent reference value.  [...]