IMU nightmare - what to do?

Sorry to hear about your situation. Visit your comune with your purchase papers and CF if you have time. If not, then yes they may fine you, but I read elsewhere someone had been told it would be €5 for them... You can actually calculate it here http://www.calcoloimu.it/ and simply pay half now via your bank or the poste... I do believe someone here posted a link to a site telling you how to pay your IMU from outside Italy. 

I know it runs up fees, but in my experience it's well worth using a professional who understands both the Italian and Brit mindset, as well as the tax systems.  I know of two that forum members use: Michael Murphy and Antonio del Gaizo, and there may be others.  Of course everyone's different and if you're resident, fluent in Italian and on chatting terms with the Comune you may not want to shell out for something you feel competent in doing yourself. And of course it may be a bit of overkill to pay a professional just to sort out your IMU.  But if you can't be there and it's stressing you out......

From a guy on another forum...  http://www.fiscoetasse.com/rassegna-stampa/15397-come-pagare-l-imu-dall-estero.html :)

Go on your comuunes website - it should have details of how to pay from abroad.  And they'll have an IMU calculator, all you need is your 'rendita' value   Just done mine with internet banking - relatively simple - 2 payments, 1 to comune bank account and 1 to the state bank account, and send copies of payment details via email to comune.  And repeat in December

I hadn't paid any tax at all since I bought my house in 2006 but have managed to catch up - firstly by paying demands that came through the post (like the rubbish ones do) and then by just visiting the comune for the remaining years.  My Italian is poor but it was easy as they simply entered the address into the magic machine, asked me how much time I spent at the house (non resident) then printed out the F24 for me to take to pay.  I was told by neighbours that fines were not going to be applied this year as everyone is in such a muddle.  Fines tend to be relatively small anyway.  I tried a commercialista but the costs were quite expensive.  Hope this helps. J

I have used a local professional firm recommended to me by the Immobiliare that I bought my house from - seems to have been a seamless operation. I pay online - and it's all sorted. One less worry.