Desktop Logic Re-Engineered For Web

Audit & Financial Data Intelligence

Execute Relative Size Factor (RSF) anomaly detection, Benford's Law audits, GSTIN Mod-36 validation, Tax Invoice generation, and Bank Statement PDF parsing directly in your browser with 100% data privacy.

Module Command Center

Input & Data

Source Files

Select or drag & drop client Excel, CSV, or PDF ledgers for audit.

Select File (Excel / CSV)

Auditing Tests

Analytical Procedures

Run standard forensic audit calculations to catch outliers & fraud.

Productivity

CA Utilities

Convert bank statements, generate tax invoices, and access ICAI papers.

Active Dataset

No file selected. Click 'Select File' or 'Load Demo Data'.

Standby

Total Rows

Unique Customers

Total Audited Value

₹0.00

RSF Flags (>50)

Audit Execution Console

[SYSTEM] Application initialized. Ready for file input.

Forensic Audit

Relative Size Factor (RSF) Test

Calculates Max 1 / Max 2 per customer to identify potential duplicate entries, cut-off errors, or unusual top-heavy transactions.

Threshold:

Total Entities Analyzed

Entities with RSF > Threshold

Highest RSF Observed

—

Single-Txn Customers

Flagged Customers (RSF > 50)

Customer Name	Txn Count	Maximum 1 Value	Maximum 2 Value	RSF Ratio	Audit Risk
No RSF calculation executed yet. Please select an Excel/CSV file or click 'Load Demo Data'.

Forensic Math

Benford's Law (First-Digit) Analysis

Tests whether leading digits of monetary transactions conform to the logarithmic frequency distribution: P(d) = log10(1 + 1/d).

Leading Digit Distribution (Observed vs Benford Theoretical)

Statistical Goodness of Fit

Chi-Square (χ²) Statistic

0.00

Critical value @ 95%: 15.51 (df=8)

Audit Assessment

Normal / Conforming

No significant digit clustering or fraud indicators detected.

Total Digits Sampled

Digit-by-Digit Variance Table

Digit	Observed Count	Observed %	Benford Expected %	Absolute Deviation	Z-Score Status

Statutory Verification

GSTIN Modulus-36 Checksum & Structure Verifier

Validates official 15-character Indian Goods & Services Tax Identification Numbers using the statutory Mod-36 Luhn-variant checksum algorithm, state codes, and PAN entity mapping.

Single GSTIN Real-Time Check

Enter 15-Digit GSTIN

Status Valid GSTIN

State: 27 - Maharashtra

Embedded PAN: AAACT2727Q

Entity Constitution: Company (C)

Mod-36 Check Digit: W (Calculated: W)

Quick Samples:

Batch GSTIN Verification

Paste a list of GSTINs or load from your sales register / vendor list.

0 GSTINs processed.

Batch Verification Results

0 Records

#	GSTIN	State	PAN	Entity Type	Checksum Match	Overall Validity
No batch executed. Paste GSTINs and click 'Validate Batch'.

Billing Automation

Tax Invoice Generator & Viewer

Engineered from invoice script.py. Formats sales register records with Indian numbering words (Crores/Lakhs), ICAI supplier details, and PDF print formatting.

Select Invoice 0 available

TAX INVOICE

BLR AITT 108

ICAI

Vasanthnagar

Bangalore, Karnataka

Invoice No.: 1000000

Dated: 01-01-2024

Supplier Ref No.: DEL10004

Other Ref(s): 123

Bill To / Consignee:

AG JOYERIA

Station Road

CALLE SUIPACHA 1111

Chennai, Tamil Nadu

Contact: Arun Gupta | Email: arun.gupta@gmail.com

Sl No.	Description	Quantity	Rate (₹)	Amount (₹)
1	Mobile Phone	250	5.99	1,497.50
	Total	250		₹1,497.50

Amount Chargeable (in words): INR One Thousand Four Hundred Ninety Seven And Fifty Paise Only

for BLR AITT 108

[ Digitally Signed ]

Authorised Signatory

Bank Statement Extraction

PDF to Structured Excel Converter

Engineered from convert excel.py. Parses bank statement PDFs to extract Txn Date, Value Date, Narration/Reference, Debit, Credit, and Balance into clean Excel.

Upload PDF Statement

Total Transactions

Total Debits

₹0.00

Total Credits

₹0.00

Net Movement

₹0.00

Parsed Transactions

Ready

Txn Date	Value Date	Description / Reference	Debit (₹)	Credit (₹)	Balance (₹)
No bank PDF uploaded yet. Upload a statement PDF or click 'Load Demo Statement'.

Audit & Financial Data Intelligence

Module Command Center

Source Files

Analytical Procedures

CA Utilities

Active Dataset

Relative Size Factor (RSF) Test

Flagged Customers (RSF > 50)

Benford's Law (First-Digit) Analysis

Leading Digit Distribution (Observed vs Benford Theoretical)

Statistical Goodness of Fit

Digit-by-Digit Variance Table

GSTIN Modulus-36 Checksum & Structure Verifier

Single GSTIN Real-Time Check

Batch GSTIN Verification

Batch Verification Results

Tax Invoice Generator & Viewer

Select Invoice 0 available

TAX INVOICE

PDF to Word (.docx) Converter

Conversion Engine

Extracted Document Content Preview

PDF to Structured Excel Converter

Parsed Transactions

ICAI Question Papers & Suggested Answers