Topics
Linear Equations in Two Variables
Quadratic Equations
- Quadratic Equations
- Factorisation Method
- Completing the Square Method
- Quadratic Formula (Shreedharacharya's Rule)
- Nature of Roots of a Quadratic Equation
- Relation Between Zeroes (Roots) and Coefficients of a Quadratic Equation
- Formation of a Quadratic Equation with Given Roots
- Application of Quadratic Equation
Arithmetic Progression
Financial Planning
- Mathematical Study of GST (Goods and Services Tax)
- GST Structure for Calculations
- Tax Invoice Under GST(Mathematics)
- GST in Trading Chain
- Input Tax Credit (ITC) in Mathematics
- Computational Mechanisms under GST
- Saving and Investment
- Shares
- Brokerage and Taxes on Share Trading
- Mutual Funds and Systematic Investment Plan
Probability
Statistics
Definition: Tax Invoice
A tax invoice is a bill issued by a registered GST dealer showing details of goods or services supplied, taxable value, GST charged (CGST, SGST or IGST), and total amount payable.
Definition: GSTIN (Goods and Services Tax Identification Number)
GSTIN is a 15-digit alphanumeric identification number allotted to every registered GST dealer for the purpose of tax administration.
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Mandatory for dealers with turnover above ₹20 lakh.
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Structure of GSTIN:
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First 2 digits → State code (e.g. 27 = Maharashtra)
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Next 10 digits → PAN of dealer
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Next 1 digit → Entity number (default = 1)
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Last 2 digits → Check code (for verification)
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Definition: HSN Code
HSN (Harmonised System of Nomenclature) is a numerical code used for the classification of goods under GST.
Definition: SAC Code
SAC (Services Accounting Code) is a numerical code used for the classification of services under GST.
Key Points: Goods Invoice vs Service Invoice
| Goods Invoice | Service Invoice |
|---|---|
| Uses HSN code | Uses SAC code |
| Quantity in kg/units | Quantity in the number of services |
| Physical goods | Intangible services |
