diff --git a/CLAUDE.md b/CLAUDE.md
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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+**taxes_az** is a Frappe/ERPNext application for managing Azerbaijan tax declarations and compliance. It integrates with Azerbaijan's E-Taxes system (new.e-taxes.gov.az) to automate tax filing, company profile management, and tax calculations.
+
+## Development Environment
+
+This is a Frappe app that must be developed within a Frappe bench environment.
+
+### Common Commands
+
+```bash
+# Development server (run from bench directory)
+cd /home/frappe/frappe-bench
+bench start
+
+# Database migrations
+bench --site [site-name] migrate
+
+# Install/reinstall app
+bench --site [site-name] install-app taxes_az
+bench --site [site-name] reinstall-app taxes_az
+
+# Console access
+bench --site [site-name] console
+
+# Clear cache
+bench --site [site-name] clear-cache
+
+# Build assets (after JS/CSS changes)
+bench build --app taxes_az
+
+# Run tests
+bench --site [site-name] run-tests --app taxes_az
+```
+
+### Post-migration Hook
+
+The app automatically creates Item Groups after migration via:
+```python
+after_migrate = "taxes_az.create_item_group.create_item_groups"
+```
+
+## Architecture
+
+### Core Integration Modules
+
+#### 1. E-Taxes Authentication (`taxes_az/auth.py`)
+- Handles authentication with Azerbaijan E-Taxes API
+- Token management and renewal (endpoint: `https://new.e-taxes.gov.az/api/po/auth/public/v1/renew`)
+- Activity tracking with 10-minute timeout
+- Key functions:
+  - `record_etaxes_activity()` - Tracks user activity for session management
+  - Authentication state stored in "Asan Login" doctype
+
+#### 2. Company E-Taxes Integration (`taxes_az/company_etaxes.py`)
+- Fetches company profile data from E-Taxes
+- Handles special gambling activity logic (codes: 92000, 9200003, 9200004, 9200001, 9200002, 9200005)
+- Key functions:
+  - `force_update_gambling_fields()` - Special handling for gambling companies
+- Client-side counterpart: `taxes_az/client/company.js`
+
+### DocTypes Structure
+
+The app contains **199 doctypes** organized into main categories:
+
+#### Tax Declarations (Main Documents)
+- **Declaration of Value Added Tax** - VAT declarations with 10+ child tables for different sections (elave1-10, bolme, hesabat, etc.)
+- **Declaration of Simplified Tax** - Simplified tax with calculation child tables
+- **Declaration of Mining Tax** - Mining resource tax with wholesale pricing tables
+- **Excise Declaration** - Excise tax with extensive child tables for different product categories
+- **Income Tax Return** - Corporate income tax with 5+ child tables
+- **Property Tax Return** - Property/land tax declarations
+- **Export Declaration** - Export-related tax declarations
+- **Withholding Tax declarations** - Various withholding tax types
+
+#### Supporting Doctypes
+- **Certificate on Non-Emergence of Tax Liability** - Tax clearance certificates (4 variations: tediyye, tediyye2, tediyye3, tediyye_4)
+- **Company metadata** - Additional activity, affiliate organizations, business objects, non-resident services
+- **Business Classification** - NACE-style activity codes
+- **Main Type of Activity** - Primary business activity classifier
+- **Agricultural Purpose Type** - Agricultural land use types
+- **EQM Codes** - E-Taxes specific codes
+- **Tax Article** - Tax article/clause definitions
+
+#### Utility Doctypes
+- **XML Mapping Tool** - Maps Frappe doctypes to E-Taxes XML formats
+- **VAT Allocation** - VAT distribution logic
+- **Tax Article Items Report** - Links items to tax articles
+
+### XML Mapping System
+
+The app includes a sophisticated XML mapping system (`taxes_az/public/js/xml_mapping/`) to convert Frappe documents to E-Taxes XML format:
+
+- **xml_parser.js** - Parses E-Taxes XML templates
+- **field_generator.js** - Generates mapping field UI
+- **doctype_field_selector.js** - Selects Frappe fields for mapping
+- **mapping_storage.js** - Stores mapping rules
+- **xml_generator.js** - Generates final XML from mapped data
+
+Usage: Create an XML Mapping Tool document, upload E-Taxes XML template, map fields to Frappe doctype fields, then generate XML for submission.
+
+### Reports
+
+Located in `taxes_az/taxes_az/report/`:
+
+- **land_tax_report** - Land/property tax calculations by tax article
+- **customer_outstanding_balance** - Outstanding customer balances
+- **fuel_products_purchase_report** - Fuel/oil product purchases
+- **mining_resources_stock_report** - Mining resources inventory
+- **gaming_revenue_report** - Gaming/gambling revenue (for gambling companies)
+- **sport_and_lottery_report** - Sports betting and lottery reporting
+- **taxable_assets_report** / **tax_exempt_assets_report** - Asset tax status
+- **tax_articles_revenue_report** - Revenue by tax article
+- **sales_invoice_info_report** / **payment_entry_info_report** - Transaction reporting
+
+### Item Groups
+
+The app manages specialized item groups for Azerbaijan tax purposes:
+- **Neft Məhsulları** (Oil Products) - Includes fuel types
+- **Faydalı qazıntılar** (Mining Resources) - 20+ types of minerals with units
+- **İdman, mərc və lotoreya oyunları** (Gaming) - Sports betting and lottery
+
+These are created via `create_item_group.py` after migration.
+
+## Frappe Framework Conventions
+
+### DocType Structure
+Each doctype folder contains:
+- `{doctype_name}.json` - Field definitions
+- `{doctype_name}.py` - Server-side controller
+- `{doctype_name}.js` - Client-side controller
+- `test_{doctype_name}.py` - Unit tests (optional)
+
+### Naming Conventions
+- Child table doctypes often have parent name + description (e.g., `declaration_of_value_added_tax_elave_1`)
+- Azerbaijani terms used extensively in doctype names
+
+### Hooks Registration
+
+Hooks are defined in `taxes_az/hooks.py`:
+
+```python
+# Custom JS for doctypes
+doctype_js = {
+    "XML Mapping Tool": [
+        "public/js/xml_mapping/xml_parser.js",
+        "public/js/xml_mapping/field_generator.js",
+        "public/js/xml_mapping/doctype_field_selector.js",
+        "public/js/xml_mapping/mapping_storage.js",
+        "public/js/xml_mapping/xml_generator.js"
+    ],
+    "Company": "client/company.js",
+    "Item Group": "public/js/item_group.js"
+}
+
+# Document events
+doc_events = {
+    "Item Group": {
+        "on_trash": "taxes_az.item_group.validate_item_group_deletion"
+    }
+}
+
+# Fixtures (master data)
+fixtures = [
+    {"doctype": "Client Script", "filters": [["module", "=", "Taxes Az"]]},
+    {"doctype": "Main type of activity"},
+    {"doctype": "Business Classification"}
+]
+```
+
+## Working with E-Taxes API
+
+### Authentication Flow
+1. User authenticates via ASAN Login (Azerbaijan's e-government system)
+2. Tokens stored in "Asan Login" doctype with `is_default` flag
+3. Activity tracked every API call to prevent timeout
+4. Automatic token renewal via `RENEW_URL`
+
+### API Integration Pattern
+```python
+# Always record activity before E-Taxes API calls
+from taxes_az.auth import record_etaxes_activity
+record_etaxes_activity()
+
+# Make API call with proper headers
+headers = {
+    "Accept": "application/json, text/plain, */*",
+    "Cache-Control": "no-cache",
+    "Referer": "https://new.e-taxes.gov.az/eportal/az/login/asan"
+}
+```
+
+## Special Business Logic
+
+### Gambling Companies
+Companies with main_activity in gambling codes must have either `seller` or `organizer` checkbox enabled. This is enforced in both Python (`company_etaxes.py`) and JavaScript (`client/company.js`).
+
+### Tax Declaration Dependencies
+Many tax declarations have complex child table structures. When modifying declarations:
+1. Check all related child tables (elave, bolme, hisse, vergi_hesab, etc.)
+2. Update calculation logic in parent doctype
+3. Ensure XML mapping includes all child table fields if used for E-Taxes submission
+
+## File Structure Reference
+
+```
+taxes_az/
+├── taxes_az/                    # Main module
+│   ├── auth.py                  # E-Taxes authentication
+│   ├── company_etaxes.py        # Company integration
+│   ├── create_item_group.py     # Item group creation
+│   ├── item_group.py            # Item group validation
+│   ├── hooks.py                 # Frappe hooks
+│   ├── client/                  # Client scripts
+│   │   └── company.js
+│   ├── public/js/
+│   │   ├── xml_mapping/         # XML mapping system
+│   │   └── item_group.js
+│   ├── data/                    # JSON data files
+│   │   ├── industrial_land_data.json
+│   │   └── cadastral_points_data.json
+│   ├── fixtures/                # Master data
+│   └── taxes_az/                # Nested module (doctypes/reports)
+│       ├── doctype/             # 199 doctypes
+│       ├── report/              # Custom reports
+│       └── print_format/        # Print templates
+├── convert-int-to-float.js      # Utility scripts
+├── float-change.js
+└── fixtures.json                # Fixture configuration
+```
+
+## Key Dependencies
+
+- **Frappe Framework** (~=15.0.0) - Managed by bench
+- **ERPNext** - Expected to be installed (uses Company, Item Group, Asset doctypes)
+- Python 3.10+
+
+## Testing
+
+Run tests for specific doctypes:
+```bash
+bench --site [site-name] run-tests --doctype "Declaration of Value Added Tax"
+```
+
+## Language Note
+
+The codebase uses a mix of:
+- **Russian** - Comments and some internal documentation
+- **Azerbaijani** - DocType names, field labels, Item Group names
+- **English** - Code, function names, technical terms
+
+When adding new features, follow existing language conventions for each context.
diff --git a/taxes_az/taxes_az/report/vat_allocation_report/__init__.py b/taxes_az/taxes_az/report/vat_allocation_report/__init__.py
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diff --git a/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.js b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.js
new file mode 100644
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--- /dev/null
+++ b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.js
@@ -0,0 +1,30 @@
+// Copyright (c) 2025, Jey Soft and contributors
+// For license information, please see license.txt
+
+frappe.query_reports["VAT Allocation Report"] = {
+	"filters": [
+		{
+			"fieldname": "company",
+			"label": __("Company"),
+			"fieldtype": "Link",
+			"options": "Company",
+			"default": frappe.defaults.get_user_default("Company"),
+			"reqd": 1
+		},
+		{
+			"fieldname": "year",
+			"label": __("Year"),
+			"fieldtype": "Int",
+			"default": new Date().getFullYear(),
+			"reqd": 1
+		},
+		{
+			"fieldname": "month",
+			"label": __("Month"),
+			"fieldtype": "Select",
+			"options": "January\nFebruary\nMarch\nApril\nMay\nJune\nJuly\nAugust\nSeptember\nOctober\nNovember\nDecember",
+			"default": ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][new Date().getMonth()],
+			"reqd": 1
+		}
+	]
+};
diff --git a/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.json b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.json
new file mode 100644
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--- /dev/null
+++ b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.json
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+{
+ "add_total_row": 0,
+ "columns": [],
+ "creation": "2025-11-26 12:00:00.000000",
+ "disable_prepared_report": 0,
+ "disabled": 0,
+ "docstatus": 0,
+ "doctype": "Report",
+ "idx": 0,
+ "is_standard": "Yes",
+ "json": "{}",
+ "letter_head": "",
+ "modified": "2025-11-26 12:00:00.000000",
+ "modified_by": "Administrator",
+ "module": "Taxes Az",
+ "name": "VAT Allocation Report",
+ "owner": "Administrator",
+ "prepared_report": 0,
+ "ref_doctype": "VAT allocation",
+ "report_name": "VAT Allocation Report",
+ "report_type": "Script Report",
+ "roles": [
+  {
+   "role": "System Manager"
+  }
+ ]
+}
diff --git a/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.py b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.py
new file mode 100644
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--- /dev/null
+++ b/taxes_az/taxes_az/report/vat_allocation_report/vat_allocation_report.py
@@ -0,0 +1,158 @@
+# Copyright (c) 2025, Jey Soft and contributors
+# For license information, please see license.txt
+
+import frappe
+from frappe import _
+from frappe.utils import flt
+
+
+def execute(filters=None):
+	"""Main function for report execution"""
+	columns = get_columns()
+	data = get_data(filters)
+	return columns, data
+
+
+def get_columns():
+	"""Define 13 columns: 1 ID + 12 data columns"""
+	columns = [
+		{
+			"label": _("VAT Allocation"),
+			"fieldname": "vat_allocation",
+			"fieldtype": "Link",
+			"options": "VAT allocation",
+			"width": 150
+		}
+	]
+
+	# Column Group 1: Ayın əvvəlinə (начало месяца)
+	columns.extend([
+		{"label": _("Ayın əvvəlinə 18%"), "fieldname": "prev_month_18", "fieldtype": "Currency", "width": 130},
+		{"label": _("Ayın əvvəlinə 0%"), "fieldname": "prev_month_0", "fieldtype": "Currency", "width": 130},
+		{"label": _("Ayın əvvəlinə Azad"), "fieldname": "prev_month_azad", "fieldtype": "Currency", "width": 130}
+	])
+
+	# Column Group 2: Yaranan borc (возникший долг)
+	columns.extend([
+		{"label": _("Yaranan borc 18%"), "fieldname": "unallocated_18", "fieldtype": "Currency", "width": 130},
+		{"label": _("Yaranan borc 0%"), "fieldname": "unallocated_0", "fieldtype": "Currency", "width": 130},
+		{"label": _("Yaranan borc Azad"), "fieldname": "unallocated_azad", "fieldtype": "Currency", "width": 130}
+	])
+
+	# Column Group 3: Silənən borc (погашенный долг)
+	columns.extend([
+		{"label": _("Silənən borc 18%"), "fieldname": "allocated_18", "fieldtype": "Currency", "width": 130},
+		{"label": _("Silənən borc 0%"), "fieldname": "allocated_0", "fieldtype": "Currency", "width": 130},
+		{"label": _("Silənən borc Azad"), "fieldname": "allocated_azad", "fieldtype": "Currency", "width": 130}
+	])
+
+	# Column Group 4: Ayın sonuna (конец месяца)
+	columns.extend([
+		{"label": _("Ayın sonuna 18%"), "fieldname": "balance_18", "fieldtype": "Currency", "width": 130},
+		{"label": _("Ayın sonuna 0%"), "fieldname": "balance_0", "fieldtype": "Currency", "width": 130},
+		{"label": _("Ayın sonuna Azad"), "fieldname": "balance_azad", "fieldtype": "Currency", "width": 130}
+	])
+
+	return columns
+
+
+def get_data(filters):
+	"""Get VAT allocation documents and calculate values"""
+
+	# Validate filters
+	if not filters.get('company'):
+		frappe.throw(_("Company is required"))
+	if not filters.get('year'):
+		frappe.throw(_("Year is required"))
+	if not filters.get('month'):
+		frappe.throw(_("Month is required"))
+
+	# Find VAT allocation document (max one result due to autoname format)
+	vat_name = f"VAT-{filters.get('year')}-{filters.get('month')}"
+
+	if not frappe.db.exists("VAT allocation", vat_name):
+		return []
+
+	# Check if submitted
+	docstatus = frappe.db.get_value("VAT allocation", vat_name, "docstatus")
+	if docstatus != 1:
+		return []
+
+	row = calculate_row_data(vat_name)
+	return [row] if row else []
+
+
+def calculate_row_data(vat_allocation_name):
+	"""Calculate all values for one VAT allocation document"""
+
+	# Get data from sales_invoice_previous_table
+	prev_month_data = frappe.db.sql("""
+		SELECT
+			item_tax_template,
+			SUM(amount) as total_amount,
+			SUM(allocated_amount) as total_allocated
+		FROM `tabVAT allocation sales invoice`
+		WHERE parent = %(parent)s
+			AND parentfield = 'sales_invoice_previous_table'
+		GROUP BY item_tax_template
+	""", {"parent": vat_allocation_name}, as_dict=1)
+
+	# Get data from sales_invoice_table
+	current_month_data = frappe.db.sql("""
+		SELECT
+			item_tax_template,
+			SUM(unallocated_amount) as total_unallocated
+		FROM `tabVAT allocation sales invoice`
+		WHERE parent = %(parent)s
+			AND parentfield = 'sales_invoice_table'
+		GROUP BY item_tax_template
+	""", {"parent": vat_allocation_name}, as_dict=1)
+
+	# Initialize row
+	row = {
+		'vat_allocation': vat_allocation_name,
+		'prev_month_18': 0.0,
+		'prev_month_0': 0.0,
+		'prev_month_azad': 0.0,
+		'unallocated_18': 0.0,
+		'unallocated_0': 0.0,
+		'unallocated_azad': 0.0,
+		'allocated_18': 0.0,
+		'allocated_0': 0.0,
+		'allocated_azad': 0.0
+	}
+
+	# Process previous month data
+	for item in prev_month_data:
+		template = (item.item_tax_template or '').strip()
+		amount = flt(item.total_amount)
+		allocated = flt(item.total_allocated)
+
+		if template in ['ƏDV 18%', 'ƏDV daxil 18%']:
+			row['prev_month_18'] += amount
+			row['allocated_18'] += allocated
+		elif template == 'ƏDV 0%':
+			row['prev_month_0'] += amount
+			row['allocated_0'] += allocated
+		elif template == 'ƏDV-dən azadolma':
+			row['prev_month_azad'] += amount
+			row['allocated_azad'] += allocated
+
+	# Process current month data
+	for item in current_month_data:
+		template = (item.item_tax_template or '').strip()
+		unallocated = flt(item.total_unallocated)
+
+		if template in ['ƏDV 18%', 'ƏDV daxil 18%']:
+			row['unallocated_18'] += unallocated
+		elif template == 'ƏDV 0%':
+			row['unallocated_0'] += unallocated
+		elif template == 'ƏDV-dən azadolma':
+			row['unallocated_azad'] += unallocated
+
+	# Calculate balances
+	row['balance_18'] = (row['prev_month_18'] + row['unallocated_18']) - row['allocated_18']
+	row['balance_0'] = (row['prev_month_0'] + row['unallocated_0']) - row['allocated_0']
+	row['balance_azad'] = (row['prev_month_azad'] + row['unallocated_azad']) - row['allocated_azad']
+
+	return row