Introduction to Accounting
What accounting is, why every business needs it, and how the accounting equation keeps everything in balance
Module 1 of 26 — Core Accounting. This is your starting point — understand what accounting is, why it exists, and the fundamental equation that every financial record in the world is built on. Estimated time: 45 min.
Learning Objectives
By the end of this module, you will be able to:
- Explain what accounting is and why businesses need it
- Describe the four steps of the accounting cycle
- Apply the accounting equation to any business
- Classify any account into Real, Personal, or Nominal category
What Is Accounting?
Think of accounting as the financial language of a business. Just like you cannot run a country without a legal system, you cannot run a business without accounting.
The official definition: Accounting is the process of identifying, recording, classifying, summarising, interpreting, and communicating financial information to help decision-makers.
In plain language: it tells you exactly where your money came from, where it went, and what you have left.
Why Businesses Need Accounting
Every business — from a roadside chai stall to a listed company — needs accounting for these reasons:
| Reason | What It Means |
|---|---|
| Track money | Know how much cash you have, who owes you, who you owe |
| Measure profit | Did you actually make money, or just feel busy? |
| Meet legal requirements | File GST returns, Income Tax, ROC filings |
| Get loans | Banks want to see your balance sheet before lending |
| Make decisions | Should you expand? Stop a product? Hire more staff? |
| Catch fraud | Systematic records make it hard to siphon funds |
The Accounting Cycle
Accounting is not a one-time job — it is a continuous cycle that repeats every financial year. Here are the four core steps:
Record — Every financial transaction is written in a journal (Day Book). This is the raw, chronological log of everything that happened.
Classify — Transactions are sorted into individual accounts (ledgers). All cash transactions go to the Cash ledger, all purchases to the Purchase ledger, and so on.
Summarise — At the end of a period, all ledgers are totalled and compiled into a Trial Balance. This confirms that debits equal credits.
Report — The Trial Balance feeds into the Trading Account, Profit & Loss Account, and Balance Sheet — the three final accounts that tell the complete financial story.
The Accounting Equation
This is the single most important equation in all of accounting. Everything in double-entry bookkeeping flows from this:
Assets = Liabilities + Capital
Or rearranged:
Capital = Assets − Liabilities
What each term means:
- Assets — Everything the business owns (cash, stock, machines, buildings, money owed to it by others)
- Liabilities — Everything the business owes to outsiders (loans, creditors, unpaid bills)
- Capital — The owner's stake; what belongs to the owner after paying off all liabilities
This equation always balances. Always. If it doesn't, something was recorded wrongly.
Types of Accounts
Every account in accounting falls into one of three categories. Understanding this is essential before you learn journal entries.
1. Real Accounts
These are accounts for tangible things — things you can touch or see.
- Examples: Cash, Bank, Stock, Land, Building, Machinery, Furniture
- These accounts continue from year to year (they never close)
2. Personal Accounts
These are accounts for persons — individuals, companies, or legal entities.
- Examples: Ramesh's Account, SBI Bank Account, TechWorld Distributors, Government (GST payable)
- Divided into: Natural persons (individuals), Artificial persons (companies), Representative persons (GST payable = representative of a group of transactions)
3. Nominal Accounts
These are accounts for income, expenses, losses, and gains. They exist only for one financial year and are closed at year end.
- Examples: Salary Expense, Rent Expense, Sales Revenue, Interest Income, Depreciation
- These accounts directly impact the Profit & Loss statement
Sunrise Retail — Case Study Application
Sunrise Retail Pvt Ltd — Let's see how this applies to our company.
Sunrise Retail Pvt Ltd is a consumer electronics trading company based in Madhapur, Hyderabad. They trade in mobile phones, laptops, tablets, and accessories. The financial year is 2025-26, starting April 1, 2025. GSTIN: 36AACCS1234A1ZP.
Opening Balance Sheet — April 1, 2025
| Assets | Amount | Liabilities & Capital | Amount |
|---|---|---|---|
| Cash in Hand | ₹50,000 | TechWorld Distributors (Creditor) | ₹1,80,000 |
| SBI Bank Account | ₹8,00,000 | Capital (Kiran Sharma) | ₹17,00,000 |
| Stock (50 phones × ₹12,000) | ₹6,00,000 | ||
| Furniture | ₹1,50,000 | ||
| Computer | ₹80,000 | ||
| Security Deposit | ₹2,00,000 | ||
| TOTAL | ₹18,80,000 | TOTAL | ₹18,80,000 |
Does the Accounting Equation Balance?
Let's verify:
Assets = Liabilities + Capital
₹18,80,000 = ₹1,80,000 + ₹17,00,000
₹18,80,000 = ₹18,80,000 ✓
The equation holds perfectly. Every transaction Sunrise Retail does throughout the year will maintain this balance — that is the beauty of double-entry accounting.
A client of ours — a small electronics trader much like Sunrise Retail — handed us a hand-prepared balance sheet where assets came to ₹42.7 lakh and liabilities plus capital came to ₹39.5 lakh. Their accountant had been chasing the ₹3.2 lakh gap for two weeks and was on the verge of "balancing it" with a suspense entry. We sat down with the cash book and within an hour found a ₹3,20,000 supplier payment recorded only on the cash side — the creditor's account was never reduced. One missing entry, two weeks of stress. The lesson: when the equation doesn't balance, the answer is always a missed half of a transaction, never a "rounding issue."
Classify Sunrise Retail's Accounts
| Account | Type | Reason |
|---|---|---|
| Cash in Hand | Real | Tangible asset |
| SBI Bank Account | Personal | Artificial person (bank) |
| Stock | Real | Tangible goods |
| Furniture | Real | Tangible asset |
| Computer | Real | Tangible asset |
| Security Deposit | Personal | Representative (landlord's deposit) |
| TechWorld Distributors | Personal | Artificial person (company) |
| Kiran Sharma's Capital | Personal | Natural person (owner) |
| Sales Revenue | Nominal | Income for the period |
| Salary Expense | Nominal | Expense for the period |
| Rent Expense | Nominal | Expense for the period |
Practice Exercise
Exercise 1: Sunrise Retail makes the following changes in the first week:
- Receives ₹2,00,000 cash from Kiran Sharma as additional capital
- Purchases a printer for ₹25,000 cash
What is the new accounting equation balance? Show all three components.
Click to reveal solution
Starting position:
- Assets: ₹18,80,000
- Liabilities: ₹1,80,000
- Capital: ₹17,00,000
After ₹2,00,000 cash introduced as capital:
- Cash increases by ₹2,00,000 → Assets: ₹20,80,000
- Capital increases by ₹2,00,000 → Capital: ₹19,00,000
After ₹25,000 cash purchase of printer:
- Cash decreases ₹25,000, Printer (asset) increases ₹25,000 → Assets: ₹20,80,000 (no net change)
Final position:
- Assets: ₹20,80,000
- Liabilities: ₹1,80,000
- Capital: ₹19,00,000
- Check: ₹1,80,000 + ₹19,00,000 = ₹20,80,000 ✓
Exercise 2: Classify each of the following into Real, Personal, or Nominal account:
- Depreciation on Furniture
- CloudStore Online Pvt Ltd (customer)
- Interest on Bank Loan
- Laptop stock
- Outstanding Salary Payable
- Discount Received from TechWorld
Click to reveal solution
- Depreciation on Furniture — Nominal (expense)
- CloudStore Online Pvt Ltd — Personal (artificial person / company)
- Interest on Bank Loan — Nominal (expense)
- Laptop Stock — Real (tangible asset)
- Outstanding Salary Payable — Personal (representative account — represents employees)
- Discount Received from TechWorld — Nominal (gain/income)
Sunrise Retail's Opening Balance Sheet — Equation in Action
On 1 April 2025, Sunrise Retail Pvt Ltd starts FY 2025-26 with the following position:
The equation holds:
- Assets ₹18,80,000 = Liabilities ₹1,80,000 + Capital ₹17,00,000
Every transaction during FY 2025-26 will change specific line items — but this fundamental balance never breaks.
How Transactions Move the Equation
| Transaction | What Changes | Equation Still Holds? |
|---|---|---|
| Kiran introduces ₹2,00,000 extra cash | Cash ↑ ₹2,00,000 · Capital ↑ ₹2,00,000 | ✓ Assets grow, Capital grows equally |
| Buy printer for ₹25,000 cash | Cash ↓ ₹25,000 · Printer ↑ ₹25,000 | ✓ Asset swap, net zero change |
| Borrow ₹5,00,000 from bank | Cash ↑ ₹5,00,000 · Bank Loan ↑ ₹5,00,000 | ✓ Assets grow, Liabilities grow equally |
| Pay creditor TechWorld ₹1,80,000 | Cash ↓ ₹1,80,000 · Creditor ↓ ₹1,80,000 | ✓ Asset ↓, Liability ↓ equally |
The equation never breaks. If your accounts don't balance, there is an error somewhere — guaranteed.
Key Terms
| Term | Meaning |
|---|---|
| Accounting | Process of recording, classifying, and summarising financial transactions |
| Accounting Equation | Assets = Liabilities + Capital — always in balance |
| Assets | Resources owned by the business |
| Liabilities | Amounts owed to external parties |
| Capital | Owner's investment / net worth in the business |
| Real Account | Account for tangible items (assets) |
| Personal Account | Account for persons, companies, or institutions |
| Nominal Account | Account for incomes, expenses, gains, losses |
| Trial Balance | Summary confirming total debits = total credits |
| Financial Year | April 1 to March 31 in India |
Which of the following is a Real Account?
The accounting equation is:
In Sunrise Retail's opening balance sheet, what is the Capital amount?
Nominal accounts are accounts for:
Next: Module 2 — Accounting Entry Systems — We explore single-entry vs double-entry accounting and see exactly why double-entry became the global standard.