{
    "name": "Austrian VAT",
    "generic_label": "vat",
    "display_inclusive": true,
    "zone": "at_vat",
    "tag": "EU",
    "rates": [
        {
            "id": "at_vat_standard",
            "name": "Standard",
            "default": true,
            "amounts": [
                {
                    "id": "at_vat_standard_1995",
                    "amount": 0.2,
                    "start_date": "1995-01-01"
                }
            ]
        },
        {
            "id": "at_vat_reduced",
            "name": "Reduced",
            "amounts": [
                {
                    "id": "at_vat_reduced_1995",
                    "amount": 0.1,
                    "start_date": "1995-01-01",
                    "end_date": "2015-12-31"
                },
                {
                    "id": "at_vat_reduced_2016",
                    "amount": 0.13,
                    "start_date": "2016-01-01"
                }
            ]
        }
    ]
}

{
    "name": "Austrian VAT",
    "generic_label": "vat",
    "display_inclusive": true,
    "zone": "at_vat",
    "tag": "EU",
    "rates": [
        {
            "id": "at_vat_standard",
            "name": "Standard",
            "default": true,
            "amounts": [
                {
                    "id": "at_vat_standard_1995",
                    "amount": 0.2,
                    "start_date": "1995-01-01"
                }
            ]
        },
        {
            "id": "at_vat_intermediate",
            "name": "Intermediate",
            "amounts": [
                {
                    "id": "at_vat_intermediate_2016",
                    "amount": 0.13,
                    "start_date": "2016-01-01"
                }
            ]
        },
        {
            "id": "at_vat_reduced",
            "name": "Reduced",
            "amounts": [
                {
                    "id": "at_vat_reduced_1995",
                    "amount": 0.1,
                    "start_date": "1995-01-01"
                }
            ]
        }
    ]
}

Add an intermediate rate for Austria, fix the reduced one.
Add an intermediate rate for Austria, fix the reduced one.
