diff --git a/models.py b/models.py
index c5a1131..ef6ad6f 100644
--- a/models.py
+++ b/models.py
@@ -224,14 +224,6 @@ def effective_payment_methods(
     """
     explicit = list(getattr(event.extra, "payment_methods", []) or [])
     if explicit:
-        # The organiser's rail list is event-level, but fiat is a per-wave
-        # opt-in. Asking about a specific wave means asking what a buyer can
-        # actually use for it, so drop a rail that wave cannot honour —
-        # otherwise the NIP-52 tag advertises fiat and the checkout offers a
-        # card button that `api_ticket_create` then refuses with "Fiat
-        # payments are not enabled for this ticket wave."
-        if wave is not None and not wave.allow_fiat:
-            return [method for method in explicit if method != "fiat"]
         return explicit
     methods = ["lightning"]
     if wave.allow_fiat if wave is not None else event.allow_fiat:
diff --git a/tests/test_publish_active_wave.py b/tests/test_publish_active_wave.py
index 964a0c4..7c73781 100644
--- a/tests/test_publish_active_wave.py
+++ b/tests/test_publish_active_wave.py
@@ -158,38 +158,3 @@ def test_advertised_wave_key_tracks_the_published_wave():
     # Published while nothing is on sale — a real state, distinct from the
     # NULL that means "never published".
     assert advertised_wave_key(_event([CLOSED_EARLY_BIRD])) == ""
-
-
-def test_published_rails_drop_fiat_when_the_advertised_wave_cannot_take_it():
-    """The webapp always sets `extra.payment_methods`, so the explicit-list
-    path is the normal one — and it used to ignore the wave entirely.
-
-    That published `tickets_payment_methods: lightning,fiat` beside an
-    absent `tickets_allow_fiat`, and a card button the purchase endpoint
-    then refused ("Fiat payments are not enabled for this ticket wave").
-    """
-    event = _event(
-        [
-            _wave("a", 10.0, 0, -10, -1, allow_fiat=True),
-            _wave("b", 25.0, 9, 0, 20, allow_fiat=False),
-        ]
-    )
-    event.extra.payment_methods = ["lightning", "fiat"]
-    tags = _tags(event)
-
-    assert "tickets_allow_fiat" not in tags
-    assert tags["tickets_payment_methods"] == "lightning"
-
-
-def test_published_rails_keep_fiat_when_the_advertised_wave_takes_it():
-    event = _event(
-        [
-            _wave("a", 10.0, 0, -10, -1, allow_fiat=False),
-            _wave("b", 25.0, 9, 0, 20, allow_fiat=True),
-        ]
-    )
-    event.extra.payment_methods = ["lightning", "fiat"]
-    tags = _tags(event)
-
-    assert tags["tickets_allow_fiat"] == "true"
-    assert tags["tickets_payment_methods"] == "lightning,fiat"
diff --git a/tests/test_ticket_models.py b/tests/test_ticket_models.py
index 6d782d2..3a42e8f 100644
--- a/tests/test_ticket_models.py
+++ b/tests/test_ticket_models.py
@@ -172,48 +172,3 @@ def test_public_event_response_carries_waves():
 
     assert [w["id"] for w in body["extra"]["ticket_waves"]] == ["regular"]
     assert "promo_codes" not in body["extra"]
-
-
-# --- rails vs per-wave fiat --------------------------------------------------
-
-
-def _fiat_wave(allow_fiat: bool):
-    from ..models import TicketWave
-
-    return TicketWave(
-        id="w",
-        title="w",
-        opening_date="2030-01-01",
-        closing_date="2030-02-01",
-        currency="EUR",
-        price_per_ticket=10,
-        amount_tickets=5,
-        allow_fiat=allow_fiat,
-    )
-
-
-def test_explicit_rails_drop_fiat_for_a_wave_that_cannot_take_it():
-    """The organiser's rail list is event-level; fiat is per-wave.
-
-    Without this the NIP-52 tag advertises fiat and the checkout renders a
-    card button that `api_ticket_create` refuses with "Fiat payments are
-    not enabled for this ticket wave" (reported on aio-demo).
-    """
-    event = _event()
-    event.extra.payment_methods = ["lightning", "fiat"]
-
-    assert effective_payment_methods(event, _fiat_wave(True)) == ["lightning", "fiat"]
-    assert effective_payment_methods(event, _fiat_wave(False)) == ["lightning"]
-
-
-def test_event_level_question_still_reports_every_rail():
-    """No wave means "what did the organiser enable at all" — unfiltered."""
-    event = _event()
-    event.extra.payment_methods = ["lightning", "fiat"]
-    assert effective_payment_methods(event) == ["lightning", "fiat"]
-
-
-def test_fiat_only_rails_on_a_non_fiat_wave_leave_nothing_purchasable():
-    event = _event()
-    event.extra.payment_methods = ["fiat"]
-    assert effective_payment_methods(event, _fiat_wave(False)) == []