Small Business Accounting Pack — NPD, USN taxes, bank CSV + Excel

Load your bank statement — get taxable income, confirmed expenses and spending categories. Run a calculator — learn the tax due after the insurance deduction and your quarterly advances. The calendar tells you what to pay when.📦 FORMAT · VERSION · WARRANTY• Contents: ZIP — 4 modules, a run.py CLI, a formula-driven Excel workbook, selftest.py (125 checks), a demo statement, GUIDE.pdf with screenshots, README, LICENSE• Version: October 2026 · Python 3.9+ · standard library only• : automatically to your e-mail right after payment• Warranty: a reproducible bug is fixed within 24–72 hours (6 months of support)4 MODULES (run with python run.py)• npd — self-employed: receipts from individuals at 4% and from companies at 6%, the 2,400,000 RUB yearly cap with the remaining balance, monthly and yearly reports, receipt deadline — the 28th of the next month• usn — USN "Income" 6% with an insurance deduction down to zero; USN "Income − Expenses" 15% with the 1%-of-income minimum tax; quarterly advances on a cumulative basis• bank_statement — CSV statement parsing: Russian and English headers, operation categories (income, tax, bank, office, ads), taxable income, USN15 expenses• tax_calendar — 2026 deadlines: advances April 25/July 25/October 25, the declaration March 25, contributions December 28, the 1% over 300,000 RUB; the nearest deadline with a day countNUMBERS FROM THE DEMO (income 1,200,000 RUB/year)• USN 6%: 72,000 RUB tax, 57,390 RUB insurance deduction, 14,610 RUB to pay• IP contributions: fixed 57,390 RUB + 1% over 300,000 RUB = 63,390 RUB• The demo statement: 12 operations, 338,000 RUB taxable income, 46,000 RUB USN15 expenses• USN 15% (400,000 RUB expenses): 111,391.50 RUB tax, the 12,000 RUB minimum does not applyLIVE-FORMULA EXCEL WORKBOOKbr4 sheets (NPD, USN6, USN15, Contributions & calendar) — change the income and the tax recalculates itself. All 13 formulas were verified with the formulas engine and are covered by the selftest. Opens in Excel, LibreOffice, Google Sheets.brVERIFICATION — 125 CHECKSbrpython selftest.py recalculates every formula independently and compares it with the module output. The screenshots are real CLI output on the demo data, not mockups.brFOR WHOMbr• Self-employed — calculate the tax per receipt and watch the yearly capbr• A sole proprietor on USN — quarterly advances with the insurance deduction and a payment calendarbr• Anyone banking online — turn a statement into structured data in secondsbrBEFORE REAL CALCULATIONSbrThe rates and fixed contributions are 2026-year constants at the top of the modules; verify them against the current law. The formulas do not depend on the values.<br /><br /><br />MORE FROM THE SHOP:<br />⟶ PHP SaaS Starter Kit Pro: SaaS source code: subscriptions, invoices, API — e-market.su /6190459<br />⟶ Mortgage calculator widget: white-label payment-schedule widget — e-market.su /6190678<br />⟶ 36-month business financial model: live-formula Excel: P&L, cash, unit economics — e-market.su /6190867