SampattiTrackDouble-entry bookkeeping is a method of recording money in which every transaction is entered twice: once as a debit in one account and once as a credit in another, for the same amount. Because both sides must match, the books always balance, and a mistake shows up as a difference you can find and fix.
The idea in one sentence
Money never appears or disappears; it moves from somewhere to somewhere. When you buy a coffee, cash leaves your wallet and an expense is recorded. When you get paid, money arrives in your bank and income is recorded. Double-entry bookkeeping simply writes down both ends of that movement.
Single-entry records, like a typical expense list, only note one side: "spent 200 on coffee". They tell you nothing about which account the money came from, so they cannot tell you whether your balances are right.
The five kinds of accounts
Every account in a double-entry system belongs to one of five groups.
- Assets are things you own: bank balances, cash, mutual funds, stocks, gold, a deposit you can get back.
- Liabilities are things you owe: credit card balances, a home or car loan, money borrowed from a friend.
- Equity is what is left after you subtract liabilities from assets. For a person, this is your net worth.
- Income is money coming in: salary, interest, dividends, rent received.
- Expenses are money going out for things consumed: groceries, rent paid, fuel, subscriptions.
These connect through the accounting equation:
Income increases equity and expenses reduce it, so over time the equation becomes: your net worth changes by income minus expenses (plus any change in the market value of what you own).
Equity in SampattiTrack. You never manage equity yourself. The app keeps a single Equity:Opening Balance account that records the starting balances of your accounts, and it shows your net worth directly as assets minus liabilities.
Debits and credits without the jargon
A debit is an entry on the left side of an account and a credit is an entry on the right. The words do not mean "good" or "bad", and they do not mean the same as a bank's "debit" and "credit" alerts. They are just two directions. What matters is how each direction affects each account type:
| Account type | Debit does this | Credit does this |
|---|---|---|
| Asset | Increases | Decreases |
| Expense | Increases | Decreases |
| Liability | Decreases | Increases |
| Income | Decreases | Increases |
| Equity | Decreases | Increases |
A handy way to remember: assets and expenses grow with debits; everything else grows with credits. For every transaction, total debits must equal total credits.
Worked example 1: you receive a salary
Your employer pays ₹80,000 into your bank account.
| Account | Debit | Credit |
|---|---|---|
| Bank (asset) | ₹80,000 | |
| Salary (income) | ₹80,000 |
The bank balance, an asset, goes up (debit). Income goes up (credit). Both sides are ₹80,000.
Worked example 2: a purchase on a credit card
You buy groceries worth ₹2,500 using a credit card. No cash has moved yet.
| Account | Debit | Credit |
|---|---|---|
| Groceries (expense) | ₹2,500 | |
| Credit card (liability) | ₹2,500 |
The expense is recognised now, when you consumed the goods. The card balance, a liability, rises because you owe the bank more.
Worked example 3: paying the card bill
When the statement arrives you pay ₹2,500 from your bank account.
| Account | Debit | Credit |
|---|---|---|
| Credit card (liability) | ₹2,500 | |
| Bank (asset) | ₹2,500 |
The liability shrinks (debit) and the bank balance shrinks (credit). Notice that no expense is recorded here. The expense was already counted at the time of purchase. This is exactly how double entry stops you from counting the same spending twice.
Why every transaction touches two accounts
Because each entry has two sides, the system carries a built-in check. Add up all debits and all credits across your accounts: they must be equal. If they are not, something was entered wrongly, and you know to look. This list of totals is called a trial balance.
Double entry also answers questions a simple list cannot. Where did the money for this purchase come from? How much do I owe right now? Did my savings grow because I earned more, or because my investments rose?
How double entry catches mistakes
- Typos: if you enter ₹2,500 on one side and ₹250 on the other, the entry will not balance.
- Missing entries: if a payment was recorded in the bank but never against the card, the card balance will not match its statement.
- Double counting: paying a card bill moves money between an asset and a liability, so it cannot inflate your expenses.
- Reconciliation: each account balance can be compared with the bank or broker statement. Any gap points to a specific missing or wrong transaction.
Applying it to personal finance
You do not need to think in debits and credits every day. The practical benefit is the structure: keep real accounts (bank, wallet, cards, loans, investments) and categories (income and expense types), and record each transaction as a movement between two of them. A transfer from savings to checking is a movement between two assets. A loan EMI is a movement from a bank account to a loan liability (principal) and an interest expense. A split bill, such as a supermarket receipt with groceries and household items, is one transaction with several expense lines that add up to the total paid.
Key takeaways
- Every transaction is recorded twice, as a debit in one account and a credit in another, for the same amount.
- The five account types are assets, liabilities, equity, income and expenses; your net worth is assets minus liabilities.
- Assets and expenses increase with debits; liabilities, income and equity increase with credits.
- Paying a credit card bill moves money between accounts; it is not a new expense.
- Because debits must equal credits, errors surface early and balances can be reconciled with statements.
Frequently asked questions
Is double-entry bookkeeping only for businesses?
No. Businesses popularised it, but the same logic works for a household. Bank accounts, cards, loans and investments are accounts, and salary and spending are income and expenses.
What is the difference between a debit and a credit?
They are the left and right sides of an entry. Whether a debit increases or decreases a balance depends on the account type: it increases assets and expenses and decreases liabilities, income and equity.
Why does paying a credit card bill not count as spending?
The spending was recorded when you made the purchase. The bill payment only moves money from your bank account to reduce what you owe the card issuer.
Do I need accounting knowledge to use it?
Not really. If you can say where money came from and where it went, you already understand the idea. Good tools handle the debit and credit sides for you.
Putting it into practice
SampattiTrack is built on a double-entry ledger: you keep accounts, categories and tags, and a transaction can be split across several categories. Net worth and cash flow are calculated from the same entries, and your data stays on your device with optional private iCloud sync and no sign-up. You can try it from the App Store.
This article is for educational purposes only. It is not investment, tax, legal or financial advice. Examples use made-up numbers, and past returns do not predict future results.