diff --git a/payments/migrations/0008_add_new_tax_percentage.py b/payments/migrations/0008_add_new_tax_percentage.py
new file mode 100644
index 000000000..1deb4fc22
--- /dev/null
+++ b/payments/migrations/0008_add_new_tax_percentage.py
@@ -0,0 +1,24 @@
+# Generated by Django 2.2.11 on 2024-08-17 13:04
+
+from decimal import Decimal
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('payments', '0007_add_invoice_model'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='orderline',
+            name='tax_percentage',
+            field=models.DecimalField(choices=[(Decimal('0.00'), '0.00'), (Decimal('10.00'), '10.00'), (Decimal('14.00'), '14.00'), (Decimal('24.00'), '24.00'), (Decimal('25.50'), '25.50')], decimal_places=2, default=Decimal('25.50'), max_digits=5, verbose_name='tax percentage'),
+        ),
+        migrations.AlterField(
+            model_name='sapmaterialcode',
+            name='tax_percentage',
+            field=models.DecimalField(choices=[(Decimal('0.00'), '0.00'), (Decimal('10.00'), '10.00'), (Decimal('14.00'), '14.00'), (Decimal('24.00'), '24.00'), (Decimal('25.50'), '25.50')], decimal_places=2, default=Decimal('25.50'), max_digits=5, verbose_name='tax percentage'),
+        ),
+    ]
diff --git a/payments/models.py b/payments/models.py
index db8f0e78d..a06bd536b 100644
--- a/payments/models.py
+++ b/payments/models.py
@@ -29,10 +29,11 @@
         "10.00",
         "14.00",
         "24.00",
+        "25.50",
     )
 ]
 
-DEFAULT_TAX_PERCENTAGE = Decimal("24.00")
+DEFAULT_TAX_PERCENTAGE = Decimal("25.50")
 PRICE_PER_PERIOD = "per_period"
 PRICE_FIXED = "fixed"
 PRICE_TYPE_CHOICES = (
diff --git a/payments/providers/cpu_ceepos.py b/payments/providers/cpu_ceepos.py
index 84f26a054..1bb70ec9d 100644
--- a/payments/providers/cpu_ceepos.py
+++ b/payments/providers/cpu_ceepos.py
@@ -150,6 +150,7 @@ def _get_order_line_description(order: Order) -> str:
         def _get_ceepos_tax_code(order_line: OrderLine) -> str:
             tax_pct = order_line.tax_percentage
             ceepos_tax_codes = {
+                25_500_000: "255",
                 24_000_000: "24",
                 14_000_000: "14",
                 10_000_000: "10",
@@ -158,6 +159,7 @@ def _get_ceepos_tax_code(order_line: OrderLine) -> str:
             # Tampere specific Ceepos tax codes in the production environment
             if self.url_payment_api == "https://shop.tampere.fi/maksu.html":
                 ceepos_tax_codes = {
+                    25_500_000: "35",
                     24_000_000: "15",
                     14_000_000: "14",
                     10_000_000: "13",
diff --git a/payments/tests/test_cpu_ceepos.py b/payments/tests/test_cpu_ceepos.py
index 09efb7887..832c11ac0 100644
--- a/payments/tests/test_cpu_ceepos.py
+++ b/payments/tests/test_cpu_ceepos.py
@@ -1,6 +1,7 @@
 import hmac
 import json
 from unittest import mock
+from decimal import Decimal
 
 import pytest
 from django.http import HttpResponse
@@ -324,6 +325,50 @@ def test_payload_add_products_success(payment_provider, order_with_products):
         assert "Description" in product
 
 
+@pytest.mark.parametrize(
+    "tax_percentage,tax_code",
+    (
+        (Decimal('0'), "0"),
+        (Decimal('10.00'), "10"),
+        (Decimal('14.00'), "14"),
+        (Decimal('24.00'), "24"),
+        (Decimal('25.50'), "255"),
+    ),
+)
+def test_tax_code_mapping_in_qa(payment_provider, order_with_products, tax_percentage, tax_code):
+    """Test the tax percentage is mapped to a correct code in qa environment"""
+    payload = {}
+    
+    order_with_products.order_lines.all().update(tax_percentage=tax_percentage)
+    payment_provider.payload_add_products(payload, order_with_products)
+
+    for product in payload["Products"]:
+        assert product["Taxcode"] == tax_code
+
+
+@pytest.mark.parametrize(
+    "tax_percentage,tax_code",
+    (
+        (Decimal('0'), "18"),
+        (Decimal('10.00'), "13"),
+        (Decimal('14.00'), "14"),
+        (Decimal('24.00'), "15"),
+        (Decimal('25.50'), "35"),
+    ),
+)
+def test_tax_code_mapping_in_production(provider_base_config, order_with_products, tax_percentage, tax_code):
+    """Test the tax percentage is mapped to a correct code in production environment"""
+    provider_base_config["RESPA_PAYMENTS_CEEPOS_API_URL"] = "https://shop.tampere.fi/maksu.html"
+    payment_provider = CPUCeeposProvider(config=provider_base_config)
+    payload = {}
+    
+    order_with_products.order_lines.all().update(tax_percentage=tax_percentage)
+    payment_provider.payload_add_products(payload, order_with_products)
+
+    for product in payload["Products"]:
+        assert product["Taxcode"] == tax_code
+
+
 def test_payload_add_customer_success(payment_provider, order_with_products):
     """Test the customer data from order is added correctly into payload"""
     payload = {}
diff --git a/respa_pricing/migrations/0008_add_new_tax_percentage.py b/respa_pricing/migrations/0008_add_new_tax_percentage.py
new file mode 100644
index 000000000..06be99b19
--- /dev/null
+++ b/respa_pricing/migrations/0008_add_new_tax_percentage.py
@@ -0,0 +1,24 @@
+# Generated by Django 2.2.11 on 2024-08-17 15:15
+
+from decimal import Decimal
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('respa_pricing', '0007_auto_20231218_1250'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='eventtype',
+            name='tax_percentage',
+            field=models.DecimalField(choices=[(Decimal('0.00'), '0.00'), (Decimal('10.00'), '10.00'), (Decimal('14.00'), '14.00'), (Decimal('24.00'), '24.00'), (Decimal('25.50'), '25.50')], decimal_places=2, default=Decimal('25.50'), max_digits=5, verbose_name='tax percentage'),
+        ),
+        migrations.AlterField(
+            model_name='usergroup',
+            name='tax_percentage',
+            field=models.DecimalField(choices=[(Decimal('0.00'), '0.00'), (Decimal('10.00'), '10.00'), (Decimal('14.00'), '14.00'), (Decimal('24.00'), '24.00'), (Decimal('25.50'), '25.50')], decimal_places=2, default=Decimal('25.50'), max_digits=5, verbose_name='tax percentage'),
+        ),
+    ]
diff --git a/respa_pricing/models/price.py b/respa_pricing/models/price.py
index 1d88c66ac..1414cc7b5 100644
--- a/respa_pricing/models/price.py
+++ b/respa_pricing/models/price.py
@@ -23,10 +23,11 @@
         "10.00",
         "14.00",
         "24.00",
+        "25.50",
     )
 ]
 
-DEFAULT_TAX_PERCENTAGE = Decimal("24.00")
+DEFAULT_TAX_PERCENTAGE = Decimal("25.50")
 
 PRICE_PER_PERIOD = "per_period"
 PRICE_FIXED = "fixed"