public async Task <Tax> Search(string municipality, DateTime date)
{
var taxes = await _taxRepository.ListAsync();
var taxesForMunicipality = taxes
.Where(tax => tax.Municipality == municipality)
.OrderBy(tax => tax.TaxType);
var tax = taxesForMunicipality.FirstOrDefault(tax => tax.StartDate.Date <= date.Date && date.Date <= tax.EndDate.Date);
return(tax);
}