diff --git a/pay-api/migrations/versions/44bd57ece7b0_ppr_filing_types.py b/pay-api/migrations/versions/44bd57ece7b0_ppr_filing_types.py
new file mode 100644
index 000000000..fc517e881
--- /dev/null
+++ b/pay-api/migrations/versions/44bd57ece7b0_ppr_filing_types.py
@@ -0,0 +1,70 @@
+"""ppr_filing_types
+
+Revision ID: 44bd57ece7b0
+Revises: 609b98d87a72
+Create Date: 2021-09-16 16:25:58.618648
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from datetime import date
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import Date, Float, String, Boolean
+from sqlalchemy.sql import column, table
+
+# revision identifiers, used by Alembic.
+revision = '44bd57ece7b0'
+down_revision = '609b98d87a72'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_index(op.f('ix_invoices_created_on'), 'invoices', ['created_on'], unique=False)
+    op.alter_column('payment_line_items', 'fee_distribution_id',
+                    existing_type=sa.INTEGER(),
+                    nullable=True)
+
+    filing_type_table = table('filing_types',
+                              column('code', String),
+                              column('description', String)
+                              )
+    fee_schedule_table = table('fee_schedules',
+                               column('filing_type_code', String),
+                               column('corp_type_code', String),
+                               column('fee_code', String),
+                               column('fee_start_date', Date),
+                               column('fee_end_date', Date)
+                               )
+
+    op.bulk_insert(
+        filing_type_table,
+        [
+            {'code': 'FSDIS', 'description': 'PPR Total Discharge'},
+            {'code': 'NCREG', 'description': 'PPR No Charge Registration'},
+            {'code': 'NCCHG', 'description': 'PPR No Charge Change or Amendment'}
+        ]
+    )
+
+    op.bulk_insert(
+        fee_schedule_table,
+        [
+            {'filing_type_code': 'FSDIS', 'corp_type_code': 'PPR', 'fee_code': 'EN107', 'fee_start_date': date.today(),
+             'fee_end_date': None},
+            {'filing_type_code': 'NCREG', 'corp_type_code': 'PPR', 'fee_code': 'EN107', 'fee_start_date': date.today(),
+             'fee_end_date': None},
+            {'filing_type_code': 'NCCHG', 'corp_type_code': 'PPR', 'fee_code': 'EN107', 'fee_start_date': date.today(),
+             'fee_end_date': None}
+        ]
+    )
+
+
+def downgrade():
+    op.execute("DELETE FROM fee_schedules WHERE filing_type_code in ('NCCHG', 'NCREG', 'FSDIS')")
+    op.execute("DELETE FROM filing_types WHERE code in ('NCCHG', 'NCREG', 'FSDIS')")
+    op.alter_column('payment_line_items', 'fee_distribution_id',
+                    existing_type=sa.INTEGER(),
+                    nullable=False)
+    op.drop_index(op.f('ix_invoices_created_on'), table_name='invoices')
diff --git a/pay-api/src/pay_api/__init__.py b/pay-api/src/pay_api/__init__.py
index e6de6dfba..151880bc9 100755
--- a/pay-api/src/pay_api/__init__.py
+++ b/pay-api/src/pay_api/__init__.py
@@ -49,7 +49,7 @@ def create_app(run_mode=os.getenv('FLASK_ENV', 'production')):
 
         # Configure Sentry
         if app.config.get('SENTRY_DSN', None):  # pragma: no cover
-            sentry_sdk.init(
+            sentry_sdk.init(  # pylint: disable=abstract-class-instantiated
                 dsn=app.config.get('SENTRY_DSN'),
                 integrations=[FlaskIntegration()]
             )
diff --git a/pay-api/src/pay_api/config.py b/pay-api/src/pay_api/config.py
index 75802f09b..12821ddb8 100755
--- a/pay-api/src/pay_api/config.py
+++ b/pay-api/src/pay_api/config.py
@@ -82,9 +82,7 @@ class _Config():  # pylint: disable=too-few-public-methods
     DB_NAME = _get_config('DATABASE_NAME')
     DB_HOST = _get_config('DATABASE_HOST')
     DB_PORT = _get_config('DATABASE_PORT', default='5432')
-    SQLALCHEMY_DATABASE_URI = 'postgresql://{user}:{password}@{host}:{port}/{name}'.format(
-        user=DB_USER, password=DB_PASSWORD, host=DB_HOST, port=int(DB_PORT), name=DB_NAME
-    )
+    SQLALCHEMY_DATABASE_URI = f'postgresql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{int(DB_PORT)}/{DB_NAME}'
     SQLALCHEMY_ECHO = _get_config('SQLALCHEMY_ECHO', default='False').lower() == 'true'
 
     # JWT_OIDC Settings
@@ -204,9 +202,7 @@ class TestConfig(_Config):  # pylint: disable=too-few-public-methods
     DB_PORT = _get_config('DATABASE_TEST_PORT', default='5432')
     SQLALCHEMY_DATABASE_URI = _get_config(
         'DATABASE_TEST_URL',
-        default='postgresql://{user}:{password}@{host}:{port}/{name}'.format(
-            user=DB_USER, password=DB_PASSWORD, host=DB_HOST, port=int(DB_PORT), name=DB_NAME
-        ),
+        default=f'postgresql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{int(DB_PORT)}/{DB_NAME}'
     )
 
     JWT_OIDC_TEST_MODE = True
@@ -330,7 +326,5 @@ class MigrationConfig():  # pylint: disable=too-few-public-methods
     DB_NAME = _get_config('DATABASE_NAME')
     DB_HOST = _get_config('DATABASE_HOST')
     DB_PORT = _get_config('DATABASE_PORT', default='5432')
-    SQLALCHEMY_DATABASE_URI = 'postgresql://{user}:{password}@{host}:{port}/{name}'.format(
-        user=DB_USER, password=DB_PASSWORD, host=DB_HOST, port=int(DB_PORT), name=DB_NAME
-    )
+    SQLALCHEMY_DATABASE_URI = f'postgresql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{int(DB_PORT)}/{DB_NAME}'
     SQLALCHEMY_TRACK_MODIFICATIONS = False
diff --git a/pay-api/src/pay_api/factory/payment_system_factory.py b/pay-api/src/pay_api/factory/payment_system_factory.py
index 7df1c9ac0..c3fec703c 100644
--- a/pay-api/src/pay_api/factory/payment_system_factory.py
+++ b/pay-api/src/pay_api/factory/payment_system_factory.py
@@ -80,7 +80,7 @@ def create(**kwargs):
         has_bcol_account_number = account_info is not None and account_info.get('bcolAccountNumber') is not None
 
         _instance: PaymentSystemService = None
-        current_app.logger.debug('payment_method: {}'.format(payment_method))
+        current_app.logger.debug(f'payment_method: {payment_method}')
 
         if not payment_method:
             raise BusinessException(Error.INVALID_CORP_OR_FILING_TYPE)
diff --git a/pay-api/src/pay_api/models/invoice.py b/pay-api/src/pay_api/models/invoice.py
index 973714b56..3d546e664 100644
--- a/pay-api/src/pay_api/models/invoice.py
+++ b/pay-api/src/pay_api/models/invoice.py
@@ -50,6 +50,7 @@ class Invoice(Audit):  # pylint: disable=too-many-instance-attributes
     payment_method_code = db.Column(db.String(15), ForeignKey('payment_methods.code'), nullable=False)
     corp_type_code = db.Column(db.String(10), ForeignKey('corp_types.code'), nullable=True)
     disbursement_status_code = db.Column(db.String(20), ForeignKey('disbursement_status_codes.code'), nullable=True)
+    created_on = db.Column('created_on', db.DateTime, nullable=False, default=datetime.now, index=True)
 
     business_identifier = db.Column(db.String(20), nullable=True)
     total = db.Column(db.Float, nullable=False)
diff --git a/pay-api/src/pay_api/models/payment_line_item.py b/pay-api/src/pay_api/models/payment_line_item.py
index 9349f4e68..4b57cac66 100644
--- a/pay-api/src/pay_api/models/payment_line_item.py
+++ b/pay-api/src/pay_api/models/payment_line_item.py
@@ -43,7 +43,7 @@ class PaymentLineItem(BaseModel):  # pylint: disable=too-many-instance-attribute
     waived_by = db.Column(db.String(50), nullable=True, default=None)
     service_fees = db.Column(db.Float, nullable=True)
 
-    fee_distribution_id = db.Column(db.Integer, ForeignKey('distribution_codes.distribution_code_id'), nullable=False)
+    fee_distribution_id = db.Column(db.Integer, ForeignKey('distribution_codes.distribution_code_id'), nullable=True)
 
     fee_schedule = relationship(FeeSchedule, foreign_keys=[fee_schedule_id], lazy='joined', innerjoin=True)
 
diff --git a/pay-api/src/pay_api/resources/account.py b/pay-api/src/pay_api/resources/account.py
index 4355a1933..90598043e 100644
--- a/pay-api/src/pay_api/resources/account.py
+++ b/pay-api/src/pay_api/resources/account.py
@@ -230,7 +230,7 @@ def post(account_number: str):
         if not valid_format:
             return error_to_response(Error.INVALID_REQUEST, invalid_params=schema_utils.serialize(errors))
 
-        report_name = 'bcregistry-transactions-{}'.format(datetime.now().strftime('%m-%d-%Y'))
+        report_name = f"bcregistry-transactions-{datetime.now().strftime('%m-%d-%Y')}"
 
         if response_content_type == ContentType.PDF.value:
             report_name = f'{report_name}.pdf'
diff --git a/pay-api/src/pay_api/resources/fas/routing_slip.py b/pay-api/src/pay_api/resources/fas/routing_slip.py
index 79acad0a6..415095dda 100644
--- a/pay-api/src/pay_api/resources/fas/routing_slip.py
+++ b/pay-api/src/pay_api/resources/fas/routing_slip.py
@@ -103,7 +103,7 @@ def post(date: str):
         pdf, file_name = RoutingSlipService.create_daily_reports(date)
 
         response = Response(pdf, 201)
-        response.headers.set('Content-Disposition', 'attachment', filename='{}.pdf'.format(file_name))
+        response.headers.set('Content-Disposition', 'attachment', filename=f'{file_name}.pdf')
         response.headers.set('Content-Type', 'application/pdf')
         response.headers.set('Access-Control-Expose-Headers', 'Content-Disposition')
 
diff --git a/pay-api/src/pay_api/resources/invoice.py b/pay-api/src/pay_api/resources/invoice.py
index 33a358fb8..be768ae49 100644
--- a/pay-api/src/pay_api/resources/invoice.py
+++ b/pay-api/src/pay_api/resources/invoice.py
@@ -159,7 +159,7 @@ def post(invoice_id: int = None):
         try:
             pdf, file_name = InvoiceService.create_invoice_pdf(invoice_id)
             response = Response(pdf, 201)
-            response.headers.set('Content-Disposition', 'attachment', filename='{}.pdf'.format(file_name))
+            response.headers.set('Content-Disposition', 'attachment', filename=f'{file_name}.pdf')
             response.headers.set('Content-Type', 'application/pdf')
             response.headers.set('Access-Control-Expose-Headers', 'Content-Disposition')
             return response
diff --git a/pay-api/src/pay_api/resources/invoice_receipt.py b/pay-api/src/pay_api/resources/invoice_receipt.py
index 6ffcb6fb9..f9b4201a3 100644
--- a/pay-api/src/pay_api/resources/invoice_receipt.py
+++ b/pay-api/src/pay_api/resources/invoice_receipt.py
@@ -49,7 +49,7 @@ def post(invoice_id):
             response = Response(pdf, 201)
             file_name = request_json.get('fileName')
             file_name = 'Coops-Filing' if not file_name else file_name
-            response.headers.set('Content-Disposition', 'attachment', filename='{}.pdf'.format(file_name))
+            response.headers.set('Content-Disposition', 'attachment', filename=f'{file_name}.pdf')
             response.headers.set('Content-Type', 'application/pdf')
             response.headers.set('Access-Control-Expose-Headers', 'Content-Disposition')
             return response
diff --git a/pay-api/src/pay_api/services/base_payment_system.py b/pay-api/src/pay_api/services/base_payment_system.py
index 30ff2095d..b4eea3d33 100644
--- a/pay-api/src/pay_api/services/base_payment_system.py
+++ b/pay-api/src/pay_api/services/base_payment_system.py
@@ -128,5 +128,4 @@ def _release_payment(invoice: Invoice):
         except Exception as e:  # NOQA pylint: disable=broad-except
             current_app.logger.error(e)
             current_app.logger.error('Notification to Queue failed for the Payment Event %s', payload)
-            capture_message('Notification to Queue failed for the Payment Event : {msg}.'.format(msg=payload),
-                            level='error')
+            capture_message(f'Notification to Queue failed for the Payment Event : {payload}.', level='error')
diff --git a/pay-api/src/pay_api/services/cfs_service.py b/pay-api/src/pay_api/services/cfs_service.py
index 4e1afbaaf..6c5169071 100644
--- a/pay-api/src/pay_api/services/cfs_service.py
+++ b/pay-api/src/pay_api/services/cfs_service.py
@@ -156,8 +156,7 @@ def _transform_error_message(param: str) -> str:
     def _create_paybc_account(access_token, party):
         """Create account record in PayBC."""
         current_app.logger.debug('<Creating account')
-        account_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/'.format(
-            party.get('party_number', None))
+        account_url = current_app.config.get('CFS_BASE_URL') + f"/cfs/parties/{party.get('party_number', None)}/accs/"
         account: Dict[str, Any] = {
             'account_description': current_app.config.get('CFS_ACCOUNT_DESCRIPTION'),
             'customer_profile_class': CFS_CUSTOMER_PROFILE_CLASS
@@ -174,8 +173,9 @@ def _create_site(access_token, account, contact_info, receipt_method):
         current_app.logger.debug('<Creating site ')
         if not contact_info:
             contact_info = {}
-        site_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/{}/sites/' \
-            .format(account.get('party_number', None), account.get('account_number', None))
+        site_url = current_app.config.get(
+            'CFS_BASE_URL') + f"/cfs/parties/{account.get('party_number', None)}" \
+                              f"/accs/{account.get('account_number', None)}/sites/"
         site: Dict[str, Any] = {
             'site_name': 'Site 1',  # Make it dynamic if we ever need multiple sites per account
             'city': get_non_null_value(contact_info.get('city'), DEFAULT_CITY),
@@ -269,8 +269,9 @@ def create_account_invoice(cls, transaction_number: str, line_items: List[Paymen
         now = current_local_time()
         curr_time = now.strftime('%Y-%m-%dT%H:%M:%SZ')
 
-        invoice_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/{}/sites/{}/invs/' \
-            .format(cfs_account.cfs_party, cfs_account.cfs_account, cfs_account.cfs_site)
+        invoice_url = current_app.config.get(
+            'CFS_BASE_URL') + f'/cfs/parties/{cfs_account.cfs_party}' \
+                              f'/accs/{cfs_account.cfs_account}/sites/{cfs_account.cfs_site}/invs/'
 
         invoice_payload = dict(
             batch_source=CFS_BATCH_SOURCE,
diff --git a/pay-api/src/pay_api/services/distribution_code.py b/pay-api/src/pay_api/services/distribution_code.py
index 8f9c4455a..0b0760ff8 100644
--- a/pay-api/src/pay_api/services/distribution_code.py
+++ b/pay-api/src/pay_api/services/distribution_code.py
@@ -312,7 +312,7 @@ def find_all():
     @staticmethod
     def find_by_id(identifier: int):
         """Find distribution code by id."""
-        current_app.logger.debug('<find_by_id, {}'.format(identifier))
+        current_app.logger.debug(f'<find_by_id, {identifier}')
         distribution_code = DistributionCodeModel.find_by_id(identifier=identifier)
         distribution_code_schema = DistributionCodeSchema()
         current_app.logger.debug('>find_by_id')
@@ -321,7 +321,7 @@ def find_by_id(identifier: int):
     @staticmethod
     def find_active_by_account_id(account_id: int) -> DistributionCode:
         """Find active distribution code by account_id."""
-        current_app.logger.debug('<find_active_by_account_id, {}'.format(account_id))
+        current_app.logger.debug(f'<find_active_by_account_id, {account_id}')
         distribution_code = DistributionCodeModel.find_by_active_for_account(account_id)
         dist_code_svc = DistributionCode()
         dist_code_svc._dao = distribution_code  # pylint: disable=protected-access
diff --git a/pay-api/src/pay_api/services/oauth_service.py b/pay-api/src/pay_api/services/oauth_service.py
index 2e4011049..77251a2b8 100644
--- a/pay-api/src/pay_api/services/oauth_service.py
+++ b/pay-api/src/pay_api/services/oauth_service.py
@@ -53,9 +53,9 @@ def post(endpoint, token, auth_header_type: AuthHeaderType,  # pylint: disable=t
         if content_type == ContentType.JSON:
             data = json.dumps(data)
 
-        current_app.logger.debug('Endpoint : {}'.format(endpoint))
-        current_app.logger.debug('headers : {}'.format(headers))
-        current_app.logger.debug('data : {}'.format(data))
+        current_app.logger.debug(f'Endpoint : {endpoint}')
+        current_app.logger.debug(f'headers : {headers}')
+        current_app.logger.debug(f'data : {data}')
         response = None
         try:
             if is_put:
@@ -72,7 +72,7 @@ def post(endpoint, token, auth_header_type: AuthHeaderType,  # pylint: disable=t
             raise ServiceUnavailableException(exc) from exc
         except HTTPError as exc:
             current_app.logger.error(
-                'HTTPError on POST with status code {}'.format(response.status_code if response else ''))
+                f"HTTPError on POST with status code {response.status_code if response else ''}")
             if response and response.status_code >= 500:
                 raise ServiceUnavailableException(exc) from exc
             raise exc
@@ -85,11 +85,11 @@ def post(endpoint, token, auth_header_type: AuthHeaderType,  # pylint: disable=t
     @staticmethod
     def __log_response(response):
         if response is not None:
-            current_app.logger.info('Response Headers {}'.format(response.headers))
+            current_app.logger.info(f'Response Headers {response.headers}')
             if response.headers and isinstance(response.headers, Iterable) and \
                     'Content-Type' in response.headers and \
                     response.headers['Content-Type'] == ContentType.JSON.value:
-                current_app.logger.info('response : {}'.format(response.text if response else ''))
+                current_app.logger.info(f"response : {response.text if response else ''} ")
 
     @staticmethod
     def get(endpoint, token, auth_header_type: AuthHeaderType,  # pylint:disable=too-many-arguments
@@ -106,8 +106,8 @@ def get(endpoint, token, auth_header_type: AuthHeaderType,  # pylint:disable=too
         if additional_headers is not None:
             headers.update(additional_headers)
 
-        current_app.logger.debug('Endpoint : {}'.format(endpoint))
-        current_app.logger.debug('headers : {}'.format(headers))
+        current_app.logger.debug(f'Endpoint : {endpoint}')
+        current_app.logger.debug(f'headers : {headers}')
         session = requests.Session()
         if retry_on_failure:
             session.mount(endpoint, RETRY_ADAPTER)
@@ -120,8 +120,7 @@ def get(endpoint, token, auth_header_type: AuthHeaderType,  # pylint:disable=too
             current_app.logger.error(exc)
             raise ServiceUnavailableException(exc) from exc
         except HTTPError as exc:
-            current_app.logger.error(
-                'HTTPError on POST with status code {}'.format(response.status_code if response else ''))
+            current_app.logger.error(f"HTTPError on POST with status code {response.status_code if response else ''}")
             if response is not None:
                 if response.status_code >= 500:
                     raise ServiceUnavailableException(exc) from exc
diff --git a/pay-api/src/pay_api/services/paybc_service.py b/pay-api/src/pay_api/services/paybc_service.py
index 7ad6d2401..70891cb7f 100644
--- a/pay-api/src/pay_api/services/paybc_service.py
+++ b/pay-api/src/pay_api/services/paybc_service.py
@@ -113,8 +113,9 @@ def get_receipt(self, payment_account: PaymentAccount, pay_response_url: str, in
         current_app.logger.debug('<paybc_service_Getting token')
         access_token: str = CFSService.get_token().json().get('access_token')
         current_app.logger.debug('<Getting receipt')
-        receipt_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/{}/sites/{}/rcpts/'.format(
-            payment_account.cfs_party, payment_account.cfs_account, payment_account.cfs_site)
+        receipt_url = current_app.config.get(
+            'CFS_BASE_URL') + f'/cfs/parties/{payment_account.cfs_party}/accs/' \
+                              f'{payment_account.cfs_account}/sites/{payment_account.cfs_site}/rcpts/'
         parsed_url = parse_url_params(pay_response_url)
         receipt_number: str = parsed_url.get('receipt_number') if 'receipt_number' in parsed_url else None
         if not receipt_number:  # Find all receipts for the site and then match with invoice number
@@ -148,8 +149,9 @@ def _add_adjustment(self, payment_account: PaymentAccount,  # pylint: disable=to
                         inv_number: str, comment: str, amount: float, line: int = 0, access_token: str = None):
         """Add adjustment to the invoice."""
         current_app.logger.debug(f'>Creating PayBC Adjustment  For Invoice: {inv_number}')
-        adjustment_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/{}/sites/{}/invs/{}/adjs/' \
-            .format(payment_account.cfs_party, payment_account.cfs_account, payment_account.cfs_site, inv_number)
+        adjustment_url = current_app.config.get(
+            'CFS_BASE_URL') + f'/cfs/parties/{payment_account.cfs_party}/accs/{payment_account.cfs_account}' \
+                              f'/sites/{payment_account.cfs_site}/invs/{inv_number}/adjs/'
         current_app.logger.debug(f'>Creating PayBC Adjustment URL {adjustment_url}')
 
         adjustment = dict(
@@ -172,8 +174,9 @@ def _add_adjustment(self, payment_account: PaymentAccount,  # pylint: disable=to
     def _get_invoice(self, payment_account: PaymentAccount, inv_number: str, access_token: str):
         """Get invoice from PayBC."""
         current_app.logger.debug('<__get_invoice')
-        invoice_url = current_app.config.get('CFS_BASE_URL') + '/cfs/parties/{}/accs/{}/sites/{}/invs/{}/' \
-            .format(payment_account.cfs_party, payment_account.cfs_account, payment_account.cfs_site, inv_number)
+        invoice_url = current_app.config.get(
+            'CFS_BASE_URL') + f'/cfs/parties/{payment_account.cfs_party}/accs/{payment_account.cfs_account}/' \
+                              f'sites/{payment_account.cfs_site}/invs/{inv_number}/'
 
         invoice_response = self.get(invoice_url, access_token, AuthHeaderType.BEARER, ContentType.JSON)
         current_app.logger.debug('>__get_invoice')
diff --git a/pay-api/src/pay_api/services/payment.py b/pay-api/src/pay_api/services/payment.py
index c2a1743ee..4535bf8cf 100644
--- a/pay-api/src/pay_api/services/payment.py
+++ b/pay-api/src/pay_api/services/payment.py
@@ -463,9 +463,8 @@ def _prepare_csv_data(results):
             total_fees = float(invoice.get('total', 0))
             row_value = [
                 ','.join([line_item.get('description') for line_item in invoice.get('line_items')]),
-                ','.join(['{} {}'.format(
-                    detail.get('label'), detail.get('value')) for detail in invoice.get('details')
-                ]) if invoice.get('details') else None,
+                ','.join([f"{detail.get('label')} {detail.get('value')}" for detail in invoice.get('details')])
+                if invoice.get('details') else None,
                 invoice.get('folio_number'),
                 invoice.get('created_name'),
                 get_local_formatted_date_time(
diff --git a/pay-api/src/pay_api/services/payment_account.py b/pay-api/src/pay_api/services/payment_account.py
index b037e65b4..9c6ba4e4d 100644
--- a/pay-api/src/pay_api/services/payment_account.py
+++ b/pay-api/src/pay_api/services/payment_account.py
@@ -586,8 +586,8 @@ def publish_account_mailer_event(self):
                     'Notification to Queue failed for the Account Mailer %s - %s', self.auth_account_id,
                     self.name)
                 capture_message(
-                    'Notification to Queue failed for the Account Mailer on account creation : {msg}.'.format(
-                        msg=payload), level='error')
+                    f'Notification to Queue failed for the Account Mailer on account creation : {payload}.',
+                    level='error')
 
     def _create_account_event_payload(self, event_type: str, include_pay_info: bool = False):
         """Return event payload for account."""
@@ -639,8 +639,7 @@ def unlock_frozen_accounts(account_id: int):
                     'Notification to Queue failed for the Unlock Account %s - %s', pay_account.auth_account_id,
                     pay_account.name)
                 capture_message(
-                    'Notification to Queue failed for the Unlock Account : {msg}.'.format(
-                        msg=payload), level='error')
+                    f'Notification to Queue failed for the Unlock Account : {payload}.', level='error')
 
     @classmethod
     def delete_account(cls, auth_account_id: str) -> PaymentAccount:
diff --git a/pay-api/src/pay_api/services/payment_line_item.py b/pay-api/src/pay_api/services/payment_line_item.py
index 4a324571b..e4fbc9739 100644
--- a/pay-api/src/pay_api/services/payment_line_item.py
+++ b/pay-api/src/pay_api/services/payment_line_item.py
@@ -291,9 +291,10 @@ def create(invoice_id: int, fee: FeeSchedule, **kwargs):
         p.service_fees = fee.service_fees
 
         # Set distribution details to line item
-        distribution_code = DistributionCodeModel.find_by_active_for_fee_schedule(fee.fee_schedule_id)
-
-        p.fee_distribution_id = distribution_code.distribution_code_id
+        distribution_code = None
+        if p.total > 0:
+            distribution_code = DistributionCodeModel.find_by_active_for_fee_schedule(fee.fee_schedule_id)
+            p.fee_distribution_id = distribution_code.distribution_code_id
 
         if fee.waived_fee_amount > 0:
             if user.has_role(Role.STAFF.value):
diff --git a/pay-api/src/pay_api/services/payment_service.py b/pay-api/src/pay_api/services/payment_service.py
index 1abea28f6..b643563b9 100644
--- a/pay-api/src/pay_api/services/payment_service.py
+++ b/pay-api/src/pay_api/services/payment_service.py
@@ -291,7 +291,7 @@ def _calculate_fees(corp_type, filing_info):
     fees = []
     service_fee_applied: bool = False
     for filing_type_info in filing_info.get('filingTypes'):
-        current_app.logger.debug('Getting fees for {} '.format(filing_type_info.get('filingTypeCode')))
+        current_app.logger.debug(f"Getting fees for {filing_type_info.get('filingTypeCode')} ")
         fee: FeeSchedule = FeeSchedule.find_by_corp_type_and_filing_type(
             corp_type=corp_type,
             filing_type_code=filing_type_info.get('filingTypeCode', None),
diff --git a/pay-api/src/pay_api/services/receipt.py b/pay-api/src/pay_api/services/receipt.py
index 0df580176..901b512fc 100644
--- a/pay-api/src/pay_api/services/receipt.py
+++ b/pay-api/src/pay_api/services/receipt.py
@@ -160,7 +160,7 @@ def create_receipt(invoice_identifier: str, filing_data: Dict[str, Any], skip_au
         receipt_dict['templateVars'] = template_vars
 
         current_app.logger.debug(
-            '<OAuthService invoked from receipt.py {}'.format(current_app.config.get('REPORT_API_BASE_URL')))
+            f"<OAuthService invoked from receipt.py {current_app.config.get('REPORT_API_BASE_URL')}")
 
         pdf_response = OAuthService.post(current_app.config.get('REPORT_API_BASE_URL'),
                                          kwargs['user'].bearer_token, AuthHeaderType.BEARER,
diff --git a/pay-api/src/pay_api/utils/logging.py b/pay-api/src/pay_api/utils/logging.py
index 9c737649a..8b88ddcf2 100755
--- a/pay-api/src/pay_api/utils/logging.py
+++ b/pay-api/src/pay_api/utils/logging.py
@@ -26,6 +26,6 @@ def setup_logging(conf):
 
     if conf and path.isfile(conf):
         logging.config.fileConfig(conf)
-        print('Configure logging, from conf:{}'.format(conf), file=sys.stdout)
+        print(f'Configure logging, from conf:{conf}', file=sys.stdout)
     else:
-        print('Unable to configure logging, attempted conf:{}'.format(conf), file=sys.stderr)
+        print(f'Unable to configure logging, attempted conf:{conf}', file=sys.stderr)