diff --git a/src/pretix/base/models/tax.py b/src/pretix/base/models/tax.py
index c2f4c5ba5..7964a9bb3 100644
--- a/src/pretix/base/models/tax.py
+++ b/src/pretix/base/models/tax.py
@@ -340,10 +340,17 @@ class TaxRule(LoggedModel):
         rules = self._custom_rules
         if invoice_address:
             for r in rules:
-                if r['country'] == 'EU' and not is_eu_country(invoice_address.country):
-                    continue
-                if r['country'] not in ('ZZ', 'EU') and r['country'] != str(invoice_address.country):
-                    continue
+                if r['country'] == 'ZZ':    # Rule: Any country
+                    pass
+                elif r['country'] == 'EU':  # Rule: Any EU country
+                    if not is_eu_country(invoice_address.country):
+                        continue
+                elif '-' in r['country']:   # Rule: Specific country and state
+                    if r['country'] != str(invoice_address.country) + '-' + str(invoice_address.state):
+                        continue
+                else:                       # Rule: Specific country
+                    if r['country'] != str(invoice_address.country):
+                        continue
                 if r['address_type'] == 'individual' and invoice_address.is_business:
                     continue
                 if r['address_type'] in ('business', 'business_vat_id') and not invoice_address.is_business:
diff --git a/src/pretix/control/forms/event.py b/src/pretix/control/forms/event.py
index 1b82f3d63..f1da406bb 100644
--- a/src/pretix/control/forms/event.py
+++ b/src/pretix/control/forms/event.py
@@ -38,6 +38,7 @@ from decimal import Decimal
 from urllib.parse import urlencode, urlparse
 from zoneinfo import ZoneInfo
 
+import pycountry
 from django import forms
 from django.conf import settings
 from django.core.exceptions import NON_FIELD_ERRORS, ValidationError
@@ -65,7 +66,8 @@ from pretix.base.models import Event, Organizer, TaxRule, Team
 from pretix.base.models.event import EventFooterLink, EventMetaValue, SubEvent
 from pretix.base.reldate import RelativeDateField, RelativeDateTimeField
 from pretix.base.settings import (
-    PERSON_NAME_SCHEMES, PERSON_NAME_TITLE_GROUPS, validate_event_settings,
+    COUNTRIES_WITH_STATE_IN_ADDRESS, PERSON_NAME_SCHEMES,
+    PERSON_NAME_TITLE_GROUPS, validate_event_settings,
 )
 from pretix.base.validators import multimail_validate
 from pretix.control.forms import (
@@ -1428,9 +1430,20 @@ class CountriesAndEU(CachedCountries):
     cache_subkey = 'with_any_or_eu'
 
 
+class CountriesAndEUAndStates(CountriesAndEU):
+    def __iter__(self):
+        for country_code, country_name in super().__iter__():
+            yield country_code, country_name
+            if country_code in COUNTRIES_WITH_STATE_IN_ADDRESS:
+                types, form = COUNTRIES_WITH_STATE_IN_ADDRESS[country_code]
+                yield from sorted(((state.code, country_name + " - " + state.name)
+                                   for state in pycountry.subdivisions.get(country_code=country_code)
+                                   if state.type in types), key=lambda s: s[1])
+
+
 class TaxRuleLineForm(I18nForm):
     country = LazyTypedChoiceField(
-        choices=CountriesAndEU(),
+        choices=CountriesAndEUAndStates(),
         required=False
     )
     address_type = forms.ChoiceField(
diff --git a/src/pretix/static/schema/tax-rules-custom.schema.json b/src/pretix/static/schema/tax-rules-custom.schema.json
index 3eaa30d3d..5792c05be 100644
--- a/src/pretix/static/schema/tax-rules-custom.schema.json
+++ b/src/pretix/static/schema/tax-rules-custom.schema.json
@@ -8,8 +8,8 @@
     "description": "List of rules, executed in order until one matches",
     "properties": {
       "country": {
-        "description": "Country code to match. ZZ = any country, EU = any EU country.",
-        "enum": ["AD", "AE", "AF", "AG", "AI", "AL", "AM", "AO", "AQ", "AR", "AS", "AT", "AU", "AW", "AX", "AZ", "BA", "BB", "BD", "BE", "BF", "BG", "BH", "BI", "BJ", "BL", "BM", "BN", "BO", "BQ", "BR", "BS", "BT", "BV", "BW", "BY", "BZ", "CA", "CC", "CD", "CF", "CG", "CH", "CI", "CK", "CL", "CM", "CN", "CO", "CR", "CU", "CV", "CW", "CX", "CY", "CZ", "DE", "DJ", "DK", "DM", "DO", "DZ", "EC", "EE", "EG", "EH", "ER", "ES", "ET", "EU", "FI", "FJ", "FK", "FM", "FO", "FR", "GA", "GB", "GD", "GE", "GF", "GG", "GH", "GI", "GL", "GM", "GN", "GP", "GQ", "GR", "GS", "GT", "GU", "GW", "GY", "HK", "HM", "HN", "HR", "HT", "HU", "ID", "IE", "IL", "IM", "IN", "IO", "IQ", "IR", "IS", "IT", "JE", "JM", "JO", "JP", "KE", "KG", "KH", "KI", "KM", "KN", "KP", "KR", "KW", "KY", "KZ", "LA", "LB", "LC", "LI", "LK", "LR", "LS", "LT", "LU", "LV", "LY", "MA", "MC", "MD", "ME", "MF", "MG", "MH", "MK", "ML", "MM", "MN", "MO", "MP", "MQ", "MR", "MS", "MT", "MU", "MV", "MW", "MX", "MY", "MZ", "NA", "NC", "NE", "NF", "NG", "NI", "NL", "NO", "NP", "NR", "NU", "NZ", "OM", "PA", "PE", "PF", "PG", "PH", "PK", "PL", "PM", "PN", "PR", "PS", "PT", "PW", "PY", "QA", "RE", "RO", "RS", "RU", "RW", "SA", "SB", "SC", "SD", "SE", "SG", "SH", "SI", "SJ", "SK", "SL", "SM", "SN", "SO", "SR", "SS", "ST", "SV", "SX", "SY", "SZ", "TC", "TD", "TF", "TG", "TH", "TJ", "TK", "TL", "TM", "TN", "TO", "TR", "TT", "TV", "TW", "TZ", "UA", "UG", "UM", "US", "UY", "UZ", "VA", "VC", "VE", "VG", "VI", "VN", "VU", "WF", "WS", "YE", "YT", "ZA", "ZM", "ZW", "ZZ"]
+        "description": "Country code to match. ZZ = any country, EU = any EU country. For selected countries, a state can be matched (e.g. US-NY for New York).",
+        "enum": ["ZZ", "EU", "AF", "EG", "AX", "AL", "DZ", "AS", "VI", "AD", "AO", "AI", "AQ", "AG", "GQ", "AR", "AM", "AW", "AZ", "ET", "AU", "AU-ACT", "AU-NSW", "AU-NT", "AU-QLD", "AU-SA", "AU-TAS", "AU-VIC", "AU-WA", "BS", "BH", "BD", "BB", "BE", "BZ", "BJ", "BM", "BT", "BO", "BQ", "BA", "BW", "BV", "BR", "BR-AC", "BR-AL", "BR-AP", "BR-AM", "BR-BA", "BR-CE", "BR-ES", "BR-GO", "BR-MA", "BR-MT", "BR-MS", "BR-MG", "BR-PR", "BR-PB", "BR-PA", "BR-PE", "BR-PI", "BR-RN", "BR-RS", "BR-RJ", "BR-RO", "BR-RR", "BR-SC", "BR-SE", "BR-SP", "BR-TO", "VG", "IO", "BN", "BG", "BF", "BI", "CL", "CN", "MP", "CK", "CR", "CI", "CW", "DK", "DE", "DM", "DO", "DJ", "EC", "SV", "ER", "EE", "FK", "FO", "FJ", "FI", "FR", "GF", "PF", "TF", "GA", "GM", "GE", "GH", "GI", "GD", "GR", "GL", "GP", "GU", "GT", "GG", "GN", "GW", "GY", "HT", "HM", "HN", "HK", "IN", "ID", "IQ", "IR", "IE", "IS", "IM", "IL", "IT", "JM", "JP", "YE", "JE", "JO", "KY", "KH", "CM", "CA", "CA-AB", "CA-BC", "CA-MB", "CA-NB", "CA-NL", "CA-NT", "CA-NS", "CA-NU", "CA-ON", "CA-PE", "CA-QC", "CA-SK", "CA-YT", "CV", "KZ", "QA", "KE", "KG", "KI", "CC", "CO", "KM", "CG", "CD", "HR", "CU", "KW", "LA", "LS", "LV", "LB", "LR", "LY", "LI", "LT", "LU", "MO", "MG", "MW", "MY", "MY-01", "MY-02", "MY-03", "MY-04", "MY-05", "MY-06", "MY-08", "MY-09", "MY-07", "MY-12", "MY-13", "MY-10", "MY-11", "MV", "ML", "MT", "MA", "MH", "MQ", "MR", "MU", "YT", "MK", "MX", "MX-AGU", "MX-BCN", "MX-BCS", "MX-CAM", "MX-CHP", "MX-CHH", "MX-CMX", "MX-COA", "MX-COL", "MX-DUR", "MX-GUA", "MX-GRO", "MX-HID", "MX-JAL", "MX-MIC", "MX-MOR", "MX-MEX", "MX-NAY", "MX-NLE", "MX-OAX", "MX-PUE", "MX-QUE", "MX-ROO", "MX-SLP", "MX-SIN", "MX-SON", "MX-TAB", "MX-TAM", "MX-TLA", "MX-VER", "MX-YUC", "MX-ZAC", "FM", "MD", "MC", "MN", "ME", "MS", "MZ", "MM", "NA", "NR", "NP", "NC", "NZ", "NI", "NL", "NE", "NG", "NU", "KP", "NF", "NO", "OM", "AT", "TL", "PK", "PS", "PW", "PA", "PG", "PY", "PE", "PH", "PN", "PL", "PT", "PR", "RE", "RW", "RO", "RU", "BL", "PM", "SB", "ZM", "WS", "SM", "ST", "SA", "SE", "CH", "SN", "RS", "SC", "SL", "ZW", "SG", "SX", "SK", "SI", "SO", "ES", "SJ", "LK", "SH", "KN", "LC", "MF", "VC", "ZA", "SD", "GS", "KR", "SS", "SR", "SZ", "SY", "TJ", "TW", "TZ", "TH", "TG", "TK", "TO", "TT", "TD", "CZ", "TN", "TR", "TM", "TC", "TV", "UG", "UA", "HU", "UY", "UM", "UZ", "VU", "VA", "VE", "AE", "US", "US-AL", "US-AK", "US-AS", "US-AZ", "US-AR", "US-CA", "US-CO", "US-CT", "US-DE", "US-DC", "US-FL", "US-GA", "US-GU", "US-HI", "US-ID", "US-IL", "US-IN", "US-IA", "US-KS", "US-KY", "US-LA", "US-ME", "US-MD", "US-MA", "US-MI", "US-MN", "US-MS", "US-MO", "US-MT", "US-NE", "US-NV", "US-NH", "US-NJ", "US-NM", "US-NY", "US-NC", "US-ND", "US-MP", "US-OH", "US-OK", "US-OR", "US-PA", "US-PR", "US-RI", "US-SC", "US-SD", "US-TN", "US-TX", "US-UM", "US-UT", "US-VT", "US-VI", "US-VA", "US-WA", "US-WV", "US-WI", "US-WY", "GB", "VN", "WF", "CX", "BY", "EH", "CF", "CY"]
       },
       "address_type": {
         "description": "Type of customer, emtpy = any.",
diff --git a/src/tests/base/test_taxrules.py b/src/tests/base/test_taxrules.py
index ab90939ce..b643fd4ba 100644
--- a/src/tests/base/test_taxrules.py
+++ b/src/tests/base/test_taxrules.py
@@ -477,6 +477,81 @@ def test_custom_rules_specific_country(event):
     )
 
 
+@pytest.mark.django_db
+def test_custom_rules_specific_state(event):
+    tr = TaxRule(
+        event=event,
+        rate=Decimal('10.00'), price_includes_tax=False,
+        custom_rules=json.dumps([
+            {'country': 'US-NY', 'address_type': '', 'action': 'vat', 'rate': '20.00'},
+            {'country': 'US-DE', 'address_type': '', 'action': 'no'},
+            {'country': 'US', 'address_type': '', 'action': 'vat', 'rate': '30.00'},
+        ])
+    )
+    ia = InvoiceAddress(
+        is_business=True,
+        country=Country('DE')
+    )
+    assert not tr.is_reverse_charge(ia)
+    assert tr._tax_applicable(ia)
+    assert tr.tax_rate_for(ia) == Decimal('10.00')
+    assert tr.tax(Decimal('100.00'), invoice_address=ia) == TaxedPrice(
+        gross=Decimal('110.00'),
+        net=Decimal('100.00'),
+        tax=Decimal('10.00'),
+        rate=Decimal('10.00'),
+        name='',
+    )
+
+    ia = InvoiceAddress(
+        is_business=True,
+        country=Country('US'),
+        state='NC'
+    )
+    assert not tr.is_reverse_charge(ia)
+    assert tr._tax_applicable(ia)
+    assert tr.tax_rate_for(ia) == Decimal('30.00')
+    assert tr.tax(Decimal('100.00'), invoice_address=ia) == TaxedPrice(
+        gross=Decimal('130.00'),
+        net=Decimal('100.00'),
+        tax=Decimal('30.00'),
+        rate=Decimal('30.00'),
+        name='',
+    )
+
+    ia = InvoiceAddress(
+        is_business=True,
+        country=Country('US'),
+        state='NY'
+    )
+    assert not tr.is_reverse_charge(ia)
+    assert tr._tax_applicable(ia)
+    assert tr.tax_rate_for(ia) == Decimal('20.00')
+    assert tr.tax(Decimal('100.00'), invoice_address=ia) == TaxedPrice(
+        gross=Decimal('120.00'),
+        net=Decimal('100.00'),
+        tax=Decimal('20.00'),
+        rate=Decimal('20.00'),
+        name='',
+    )
+
+    ia = InvoiceAddress(
+        is_business=True,
+        country=Country('US'),
+        state='DE'
+    )
+    assert not tr.is_reverse_charge(ia)
+    assert not tr._tax_applicable(ia)
+    assert tr.tax_rate_for(ia) == Decimal('0.00')
+    assert tr.tax(Decimal('100.00'), invoice_address=ia) == TaxedPrice(
+        gross=Decimal('100.00'),
+        net=Decimal('100.00'),
+        tax=Decimal('0.00'),
+        rate=Decimal('0.00'),
+        name='',
+    )
+
+
 @pytest.mark.django_db
 def test_custom_rules_individual(event):
     tr = TaxRule(