
Originally Posted by
ibis
If we were trying to pay back the capital, perhaps. As it is, national debt is very rarely paid off (seriously, we didn't pay off any during the Celtic Tiger) - instead, it's rolled over when it matures (in other words, you borrow again to pay back the original lender).
So originally you had €67.5 billion at, say, 6.4%, for €4.32 billion a year, and you had to find a way of rolling it over in 7.5 years, which means that in about 2018 you have to borrow a fresh tranche of money to pay back the EFSF et al.
If the rate goes down to 3.5%, then you're paying €2.36 billion a year - and you borrow the fresh tranche in 2026 rather than 2018.
Most importantly, the debt will be there in 2026 either way. Seriously, it won't be paid back, or at least is hugely unlikely to be paid back. In the first case, the borrowing to roll it over happens in 2018, in the second case it happens in 2026. That makes a difference because there's a lot more room for growth and inflation between here and 2026 than there is between here and 2018.
Inflation reduces the value of the debt (assuming we're paying off the interest) - if we assume an inflation rate of c. 2% for the period, then the €67.5 billion debt from 2011 will be worth in effect €58.76 billion in 2018, or €50.15 billion in 2026. And economic growth reduces the relative burden on the economy.
In terms of interest repayments, the difference isn't as large as you might think - 6.4% for 7.5 years means €34.56 billion, 3.5% for 15 years would be €37.8 billion - you save a good deal more than that on the inflationary adjustment. And, as I said, the debt won't be paid off in 2018 anyway - it will be rolled over, which means paying the market rate interest for the subsequent 7.5 years. If that's 3.5%, then the total interest in the original deal is 7.5 years @ 6.4% and 7.5 years @ 3.5% (total €53.44 billion), whereas the new deal is potentially 15 years @ 3.5%.
So, if the new deal really is 3.5% over 15 years compared to a current 6.4% over 7.5 years, then the deal has the potential to save €24.25 billion over the next 15 years - €8.61 billion in inflation adjustment, €15.64 billion in reduced interest payments. That's €1.62 billion a year, which is not small.
Still, the details won't be exactly like that.