Ireland, Malta, and Cypress use the Euro as their currency but use dot as their decimal separator so without further context €50.000 is ambiguous. Probably the

Ireland, Malta, and Cypress use the Euro as their currency but use dot as their decimal separator so without further context €50.000 is ambiguous. Probably the best way to handle this is the way SI recommends dot vs comma be handled in scientific and technical writing. Their recommendation is to use a thin space for grouping, so if you see a dot or comma it is the decimal separator. €50.000 and €50,000 would then both be exactly €50. If you meant €50000 and wanted to separate the thousands you would would write €50 000 (which looks ugly on HN because HN turns thin space into regular space). Update: actually, SI used to recommend thin space. Now they just say space without saying what kind of space. Some people recommend choosing narrow non-breaking space (U+202F) (which HN also turns into regular space). Also, for 4 digit numbers before the decimal they recommend not separating them, so 5k Euros would be €5000 not €5 000.