Once you are the new owner you will have to pay the IBI tax (tax on real estate) and the garbage collection tax (which has to be paid once a year).
The IBI tax will have to be paid by the person owning the property since the 1st of January of the year. This means that if you buy your property on the 29th December, you will have to pay the IBI tax for the next year, but if you buy the property on the 15th January, the former owner will have to pay the IBI tax for the year and you will have to start paying this tax next year. Lately, it is common that the seller and buyer agree on paying the tax in proportion to the days when the property is owned.
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