Eurostat released a handy note showing revisions to euro area debt and deficit figures that arose as the result of conversion to ESA2010 methodology (yes, yes, that infamous inclusion of illicit trade and re-classification of R&D spending as investment, and much more).
You can read the full note here: http://epp.eurostat.ec.europa.eu/portal/page/portal/government_finance_statistics/documents/Revisions-gov-deficit-debt-2010-2013.pdf
And the effects are:
Government deficit revisions:
One clear outlier in the entire EU28 is... Ireland. We had the largest, by far, downward revision in our deficit/GDP ratio of some 1.5 percentage points, pushing our deficit down from 7.2% of GDP (ESA95) to 5.7% of GDP (ESA2010) overnight. No austerity, just accounting.
We were similarly 'fortunate' on the debt calculations side:
Per note, relating to deficit revisions: "Ireland (-3.1pp for 2010, -0.1pp for 2011, -0.1pp for 2012 and +1.0pp for 2013): the 2010 and 2011 deficits were revised mainly for other reasons (than ESA 2010 introduction) and the 2012 and 2013 deficits mainly due to introduction of ESA 2010. The deficit for 2010 was increased mainly due to reclassification of the capital injection to AIB and the deficit for 2011 due to various reasons such as an adjustment to accrual calculation for PRSI, health contribution and National Training Levy. The revisions in the deficit for 2012 and 2013 are mainly due to the classification of the Irish Bank Resolution Corporation Limited (IBRC) to the central government. "
Per note, relating to debt revisions: "Ireland (+12.2pp for 2011, +10.3pp for 2012 and +7.2pp for 2013): the revisions in the debt are mainly due to introduction of ESA 2010: the classification of the Irish Bank Resolution Corporation Limited (IBRC) to the central government as it became a government controlled financial defeasance structure in 2011."
So our actual debt rose. But our debt/GDP and deficit/GDP ratios fell:
Enron would be proud...