Home Class 11 Applied Maths Chapter 14: Tax and Utility Bills
CBSE Applied Maths (2026-27) Unit VI: Basics of Financial Mathematics Weightage: ~15 Marks in Unit

Chapter 14: Tax and Utility Bills

Learn Indian tax computations under new/old regimes, exemptions, deductions, GST (CGST/SGST/IGST), and slab-based electricity/water billing.

3 Exercises
CBSE Curriculum Aligned
Interactive Quizzes & Solutions

Chapter Exercises & Topics

Select any exercise to access theory notes, formulas, practice drills, and mini tests.

Exercise 14.1 45 mins

Income Tax

  • Assessment year, financial year, and gross total income
  • Tax exemptions and deductions (Section 80C, 80D, etc.)
  • Calculation of taxable income under current tax regimes/slabs
  • Health and Education Cess (4%), standard rebate, and net tax payable
Study Exercise Mini Test
Exercise 14.2 45 mins

Goods and Services Tax (GST)

  • Structure of GST: CGST, SGST (intra-state: 50% each), IGST (inter-state)
  • Computation of input tax credit (ITC) and net tax liability on goods/services
  • Multi-tier supply chain tax computations
Study Exercise Mini Test
Exercise 14.3 45 mins

Utility Bills

  • Electricity bill calculation (tariff slabs, fixed charges, meter rent, energy charges, electricity duty)
  • Water supply and sewerage billing structures
  • Telecommunication and broadband postpaid plan calculations
Study Exercise Mini Test

Chapter 14 Core Formula Sheet

Quick-glance formula revision for examination and numerical problem-solving:

  • $$\text{Taxable Income} = \text{Gross Total Income} - \text{Deductions}$$
  • $$\text{Total Tax} = \text{Tax on Slabs} - \text{Rebate u/s 87A} + 4\% \text{ Cess}$$
  • $$\text{Intra-state: CGST} = \frac{\text{GST Rate}}{2}, \; \text{SGST} = \frac{\text{GST Rate}}{2}$$
  • $$\text{Inter-state: IGST} = \text{GST Rate}$$
  • $$\text{Net GST Payable} = \text{Output GST} - \text{Input Tax Credit (ITC)}$$
  • $$\text{Electricity Bill} = \text{Fixed Charges} + \sum(\text{Units in Slab} \times \text{Slab Rate}) + \text{Duty/Cess}$$
Ch 13: Interests and Annuities All Chapters Syllabus Ch 15: Straight Lines