3
Chapter 3 · Workspace Basic Accounting Principles
Part I · Foundations · Chapter 3

Basic Accounting Principles

The rules behind every entry: bases of accounting, the equation, the elements, and the theory of debit and credit — practiced here with material you won't find in the book.

Online-exclusive visual guides

1. One week, three answers — the same business under each basis

Tindahan ni Nina, week of June 1–7: renders ₱10,000 of tutoring (collects only ₱6,000 of it) and receives a ₱2,000 electricity bill (pays it next month). What is this week's income?

BasisRevenue recognizedExpense recognizedNet incomeAcceptable for…
Cash basis₱6,000 (cash collected)₱0 (nothing paid yet)₱6,000Very small entities / some BIR filings — not PFRS
Accrual basis₱10,000 (earned)₱2,000 (incurred)₱8,000Required by PFRS — the reporting standard
Modified cashHybrid: balance-sheet items on accrual; income-statement items on cashvariesPermitted by BIR for certain micro/small entities; not full PFRS

Why it matters: the same week produced two different income figures. Accrual reports economic activity (what was earned and used up); cash reports only movement of money. PFRS demands the economic picture.

2. The debit–credit compass

Everything increases on its own side of the equation. Drawings and expenses sit on the debit side because they pull equity down.

⬅ DEBIT side (normal balance: debit)
Assets
Increase by debit — they live on the LEFT of A = L + E.
Drawings
Contra-equity: increases by debit because it reduces capital.
Expenses
Reduce equity, so they grow on the debit side.
➡ CREDIT side (normal balance: credit)
Liabilities
Increase by credit — RIGHT side of the equation.
Owner's Capital
Equity grows on the credit side.
Income / Revenue
Increases equity, so it grows by credit.

Memory hook (online exclusive): “D-A-D-E grows left; L-C-I grows right” — Drawings, Assets, … Expenses debit; Liabilities, Capital, Income credit.

3. Real, nominal, contra, adjunct — the four account personalities

PersonalityBehaviorClosed at year-end?Examples
Real (permanent)Balance carries into next yearNoCash, Equipment, Accounts Payable, Capital
Nominal (temporary)Measures one period only, then resets to zeroYes — closed to capitalRevenue, all expenses, Drawings
ContraAttached to a partner account, with the opposite normal balance; deducted in presentationFollows its partnerAccumulated Depreciation (vs Equipment), Allowance for Bad Debts (vs A/R)
AdjunctAttached to a partner account with the same normal balance; added in presentationFollows its partnerPremium on Bonds Payable (vs Bonds Payable)

Practice tools

Tool 1 · Accounting Equation Solver

Cover any one element and compute it from the other two. A = L + E, always.

Tool 2 · Transaction Effect Analyzer drill

For each transaction, choose the effect on the accounting equation.

Quiz · Twenty brand-new items

Fresh scenarios — none appear in the book's exercises.