The balance of payments identity
It is called a balance because it balances by construction. Every rupee that leaves the country comes back as something, and the thing it comes back as is the whole of the information.
Chapter 2 · Intermediate · Updated 3 November 2026
The balance of payments is the most misunderstood accounting statement in economics, and the misunderstanding is usually the word "balance".
It balances because it must
The balance of payments records every transaction between residents of a country and the rest of the world in a period. It is built on double entry, like any set of accounts, which means it balances by construction rather than by outcome.
current account + capital account + reserve movements = 0
That is an identity, not a finding. If India buys more goods from abroad than it sells, the difference was paid for somehow — by borrowing, by selling assets, by receiving investment, or by running down reserves. The payment is the other entry.
So "India's balance of payments is in deficit" is, strictly, a category error. What can be in deficit is the current account, or the overall balance before reserves. The whole thing nets to zero always, in every country, in every period.
Which means the interesting question is never whether it balances. It is what it balanced with. A current account deficit funded by long-term foreign investment and one funded by short-term borrowing are the same number and completely different situations, and chapter 4 is about telling them apart.
The two halves
The current account records transactions in goods, services, income and transfers — things that are consumed or earned rather than owned. It has four parts, which chapter 3 takes individually.
The capital account records transactions in assets and liabilities — who now owns what, and who owes whom. Foreign direct investment, portfolio flows, loans, deposits. Chapter 4.
The distinction is roughly: the current account is this year's income statement with the world, and the capital account is the change in the balance sheet. A country running a current account deficit is, necessarily, selling assets or taking on liabilities to the same amount.
Reading one, line by line
India's figures for August 2026, published by the Reserve Bank on 15th October 2026, in US dollars billion:
| August 2026 | |
|---|---|
| A. Current account (net) | −5.2 |
| A.1 Merchandise (net) | −26.6 |
| A.2 Services (net) | +16.5 |
| A.3 Transfers (net) | +12.8 |
| A.4 Income (net) | −8.0 |
| B. Capital account (net) | +50.6 |
| C. Overall balance (A + B) | +45.4 |
| D. Monetary movements | −45.4 |
Now check the identity. The current account deficit of 5.2 plus a capital account surplus of 50.6 gives an overall balance of +45.4, and the monetary movements line is −45.4.
The two cancel exactly. They have to.
The sign that confuses everybody
Line D is labelled, in the release itself, ['−' : Increase ; '+' : Decrease].
So a negative monetary movements figure means reserves went up. In August 2026 the −45.4 means India's foreign exchange reserves rose by US$45.4 billion.
The convention is not perverse once you see the logic: the balance of payments is a double-entry system, and acquiring a reserve asset is a debit like any other purchase. India used its overall surplus to buy foreign assets, and buying is a negative entry.
It is still the single most common misreading of this table, and the release puts the key directly in the row label because of it.
Where the errors go
Under the table sits a note that rewards reading:
Errors and omissions are included under 'Other Capital'.
Every balance of payments has errors. The data come from customs records, bank reporting, surveys and company filings, each with its own coverage and timing, and they will never agree perfectly. Since the identity must hold, the discrepancy has to live somewhere.
India folds it into "Other Capital" rather than publishing it as a separate line. The exercise at the top of this chapter asks why a statistician might choose that, and the honest answer has two sides: it keeps the account tidy and comparable, and it makes the size of the discrepancy harder for a reader to see. The International Monetary Fund's own presentation uses a separate errors line precisely so that it is visible.
Which is worth knowing as a limit rather than a complaint: "Other Capital" of +3.0 in August 2026 is a mixture of real transactions and everything that did not reconcile, and nobody outside the Reserve Bank can say in what proportion.
A second note beneath says sub-components may not tally with aggregates because of rounding. They do not, by a tenth here and there, and the release tells you so in advance — the same discipline the CPI and GDP releases showed in the two previous subjects.
Revisions, again
The column headers carry PR and P: partially revised, and preliminary.
August 2026 is preliminary. August 2025 — a year old — is still only partially revised. Balance of payments data settle slowly, because the underlying customs and banking records are themselves revised for a long time.
So the vintage question from chapter 5 of the growth subject applies here unchanged: a balance of payments figure has a release date as well as a value, and two people quoting different numbers for the same month may both be reading official data.
The timing
August's figures were published on 15th October 2026 — a lag of about six weeks.
That lag is the reason chapter 6 matters. When the Reserve Bank acted on the foreign exchange market in October, the most recent complete balance of payments picture available to anybody outside it was August's. Policy on currencies, like policy on interest rates, is made on a view of the recent past and a forecast of the near future.
The point
The balance of payments balances by construction: the current account, the capital account and reserve movements sum to zero, so the question is never whether it balances but what it balanced with. In August 2026 a current account deficit of US50.6 billion, giving an overall balance of +45.4 and a US$45.4 billion increase in reserves — which the table shows as a negative number, by a convention the row label explains. Errors and omissions are folded into Other Capital rather than shown separately, and the figures arrive about six weeks late and are revised for years.
Check yourself
4 questions. Every answer is explained afterwards, including the ones you get right — guessing correctly is not the same as knowing. Score 70% or more and the chapter is marked done.
Question 1 of 4
0 of 4 answered. You can submit with questions unanswered — they simply score zero.
Now do it with your own numbers
Take the latest monthly balance of payments release from the Reserve Bank and check the identity yourself: add the current account to the capital account and confirm it equals the overall balance, then confirm the monetary movements line is that figure with the sign reversed. Then find the note telling you where errors and omissions are hidden, and say why a statistician would choose to put them there rather than in their own line.
The release prints four columns — the month and the same month a year earlier, then the fiscal year to date for both. Do the check on all four and you will find it holds in every one, because it is an identity rather than a measurement. The errors note is directly under the table.
Who published this
Published by FreeFinance, an independent financial education project. How these chapters are written and checked. Nothing here is investment advice.