The Documents You Receive — CAS, Contract Notes & AIS

Here is a fear almost nobody says out loud: once you start investing, the statements start arriving — and you don't read a single one. A CAS keeps landing in your inbox (monthly, once you've traded). A contract note pings in after every trade. A fund sends its own account statement. And once a year the income-tax department quietly assembles a file called the AIS that lists things about your money you didn't know it could see. The PDFs pile up unopened, and a small dread grows underneath: what if there is an error in there? A fraud? A tax problem that becomes a notice — and I'd have known, if only I'd looked?

This lesson is the cure for that dread. These documents are not spam and they are not homework — they are your audit trail, the independent record of everything you own and everything you've done. Read the right way, they are the single most powerful tool a small investor has for catching a mistake, a scam, or a tax mismatch *early*, while it's still a five-minute fix and not a notice. You do not need an accountant to read them. You need to know what each one is, where it comes from, and the one habit that ties them together: reconciliation — checking that the totals add up and that the records agree.

We'll walk four real documents on four people from our cast. Suresh (55, Kochi, a large taxable equity book) will read a contract note after a trade. The Iyers (Rohan and Meera, Bengaluru, about ₹35 lakh saved) will read their whole-portfolio CAS. Aarti (24, Pune, first-year investor) will read her AIS — and find something in it that isn't hers. And Tanvi (28, Gurugram, sitting on a ₹50 lakh windfall) will see a transaction she doesn't recognise, and learn to reconcile it before she panics.

Before any single document, hold the whole map in your head: four documents, four different senders, four different schedules. Knowing *who* sends *what* and *when* is half of not being scared of the pile — and it's the first thing a fake statement gets wrong.

Four senders is itself the point. The Consolidated Account Statement (CAS) comes from the depositories; the contract note from your broker; the Statement of Account (SoA) from a fund's registrar (an RTA); and the Annual Information Statement (AIS) — with its summary, the TIS — from the tax department. Because no single institution sends all four, a forger has to fake the right sender, the right format, and the right schedule all at once — which is exactly why a fake usually gets one of the three wrong. The schedules also explain a puzzle you'll notice later: an active trader gets a CAS most months while a buy-and-hold investor gets only two a year — nothing is missing, the CAS simply follows your transactions. We'll define each document properly as we open it; for now, just hold the shape — who sends what, and roughly when.

Start with the document that answers the question everyone actually has: *what do I own, in total, right now?* That is the Consolidated Account Statement, or CAS — a single statement, tied to your PAN, that pulls together every holding across your demat account(s) and your mutual funds into one view. 'Consolidated' is the whole point: you may have bought an ETF through one broker, a couple of shares through another, and three mutual funds directly from the fund houses — the CAS gathers all of it under your one PAN so you never have to log into five apps to see your portfolio.

It comes from the two depositories — NSDL and CDSL, the institutions that hold your shares in electronic (demat) form, which you met in Lesson 13 (The Demat & Trading Account, Demystified). Because the depositories sit underneath every broker, they can see all your demat holdings at once; and because mutual-fund registrars share data with them, the CAS also carries your fund units. You don't apply for it — it's generated automatically and emailed to you. If you've never seen yours, you register once at nsdlcas.nsdl.com with your CAS ID (a reference number printed on any CAS you've already received — or get it from your depository or broker) and PAN, and it starts arriving. No CAS ID yet? Your broker's console shows the very same holdings.

Now the Iyers. Rohan (38, earning ₹22 lakh) and Meera (36, ₹8 lakh) have built up about ₹35 lakh over the years — but that number lives in several places, and this is the single most important thing to understand about a CAS: it does not show your whole net worth. It shows only what sits in demat or mutual-fund form. Here is how the Iyers' ₹35 lakh actually splits:

So the Iyers' CAS shows a portfolio value of ₹15,00,000 (fifteen lakh) — the demat-and-mutual-fund slice. Their ₹12,00,000 EPF and ₹8,00,000 PPF are not in it, because the EPFO and the PPF passbook are separate systems the depositories don't touch. This matters enormously: if you ever try to reconcile your CAS against 'everything I own,' you'll think ₹20 lakh has gone missing. It hasn't — it was never supposed to be here. The CAS is your *market-linked* portfolio, not your bank balance, not your provident fund, not your flat.

Read the specimen top to bottom the way the Iyers do. At the very top sits the PORTFOLIO VALUE — ₹15,00,000 — and an asset-wise classification the CAS draws for you: equity ₹13,00,000, debt ₹1,00,000, gold ₹1,00,000. Below that, two blocks. The demat holdings block lists what NSDL/CDSL hold electronically for them: a Nifty 50 ETF worth ₹3,00,000, direct shares worth ₹1,50,000, and a Sovereign Gold Bond worth ₹1,00,000 (SGBs live in demat too). The mutual-fund holdings block lists their fund folios as a Statement of Account: a Nifty 50 index fund ₹4,00,000, a flexi-cap fund ₹2,50,000, an ELSS tax-saver ₹2,00,000 (the Iyers are old-regime, so the ELSS earns them an 80C deduction), and a short-duration debt fund ₹1,00,000. Every number here is what a holding is worth today; the fund categories are generic, for teaching — not recommendations.

Reading the CAS is one skill; reconciling it is the one that protects you. To reconcile a statement means to check that its headline total equals the sum of its parts — that nothing has been added that shouldn't be there, and nothing you own has silently vanished. On a CAS the test is simple arithmetic, and it's the single habit that turns a scary PDF into a thirty-second check.

Do it with the Iyers' numbers. Add the demat block: ETF ₹3,00,000 + shares ₹1,50,000 + SGB ₹1,00,000 = ₹5,50,000. Add the mutual-fund block: ₹4,00,000 + ₹2,50,000 + ₹2,00,000 + ₹1,00,000 = ₹9,50,000. Now add the two blocks: ₹5,50,000 + ₹9,50,000 = ₹15,00,000 — exactly the portfolio value printed at the top. It reconciles. The Iyers can close the PDF knowing the statement is internally honest: every rupee at the top is accounted for by a holding below it.

Cross-checking is the other half. Because the CAS aggregates *both* depositories and *all* your fund houses, it's the ideal place to catch a holding that's fallen off one app or an old folio you forgot. If your broker's app shows the ETF but the CAS shows the ETF and an old fund from years ago, the CAS just found you money you'd lost track of. The consolidated view is the point — one PAN, one picture.

The CAS tells you what you own. The contract note tells you what happened the moment you bought or sold it. It is the legally required document your broker must send you after every trade — usually by the end of the next day — and it is the single most under-read document in investing. Most people place a BUY, see the shares appear, and never open the note. That's a mistake: the contract note is the only place that shows you *exactly* what price your order executed at, *exactly* what you were charged, and a set of unique IDs that are your proof the trade was real and yours.

Suresh, our Kochi CA with a large equity book, just bought 800 shares of a large-cap company at ₹1,500 each — a traded value of ₹12,00,000 (twelve lakh). (The company is illustrative; this is not a stock recommendation.) He does what most investors skip: he opens the contract note and reads it line by line. Two questions drive him — *did my order execute at the price I expected, and were the charges correct?* — and a third that most people never think of: *do the trade and order IDs prove this is genuinely my trade?*

Walk the note the way Suresh does. At the top: the broker's identity — name, address, and crucially its SEBI registration number, the thing that separates a real broker from a fake one. Then the trade's identity: a contract note number, the trade date, and a settlement number (equity trades in India settle T+1 — the money and shares change hands one business day later, as you saw in Lesson 12, How Markets Actually Work). Then the block Suresh checks first — the trade itself:

• Order number and order time — when you placed the instruction. Trade number and trade time — when the exchange actually matched and filled it. These four together are the trade/order ID: your unique fingerprint on this transaction, traceable on the exchange. If a 'statement' ever shows a trade with no such IDs, or IDs that don't match your broker's records, that's your fraud tripwire.
• Quantity and price — 800 shares at ₹1,500. Suresh checks the price against what he expected when he placed the order. A market order can fill at a slightly different price than the screen showed; the contract note is where you confirm what you *actually* paid, not what you hoped to.
• Traded value — ₹12,00,000 — quantity × price, before any charges. This is the raw cost of the shares; the charges sit on top.

Now the charges — and the reconciliation that catches an overcharge. Below the traded value, the contract note itemises every fee and tax, because SEBI requires each one to be shown separately — brokerage cannot be hidden inside the price. Suresh reads them as two very different kinds of money: what his broker chose to charge, and what the government and exchange require by law.

Add the charges: brokerage ₹2,400 + STT ₹1,200 + exchange fee ₹36 + SEBI fee ₹1 + GST ₹439 + stamp ₹180 = ₹4,256. Add that to the traded value: ₹12,00,000 + ₹4,256 = ₹12,04,256 — and that is the exact rupee amount debited from Suresh's bank. It reconciles. Now Suresh reads the *meaning*: of the ₹4,256, the ₹2,400 brokerage is the only avoidable rupee — it's his broker's fee, and a discount broker would charge ₹0 on an equity-delivery buy. The other ₹1,856 is statutory — STT, stamp, exchange and SEBI fees, GST — the same at every broker, fixed by law. So the contract note quietly answers a question from Lesson 54 (RIA vs Distributor vs MFD): *is my broker's fee worth it?* On this trade, ₹2,400 says maybe not.

One more document you'll meet, and one piece of plumbing that explains it. When you buy a mutual fund, the fund house doesn't keep your folio records itself — it hires a Registrar and Transfer Agent (RTA) to do it. Two RTAs handle almost every fund in India: CAMS and KFintech. They are the back office that records your units, processes your SIP, and sends your statements. You'll see their names on emails and on the portals where you download statements — they are not funds and not brokers, they are the record-keepers.

That's why there are two overlapping statements, and the difference is just scope:

Think of the SoA as one chapter and the CAS as the whole book. If Aarti wants to see every SIP instalment into one particular index fund, the SoA for that fund shows the detail. If she wants to see everything she owns, the CAS is the right document. There's also a consolidated mutual-fund statement (CAS–CAMS+KFintech) you can request that merges just your funds across both RTAs — a middle option when you want all your funds but not your demat shares. You don't need to memorise which is which; you need to know that when a fund-house statement and your CAS disagree, you reconcile them the same way — line against line — and the depository CAS is the wider, cross-checking view.

Now the document that surprises people the most. Every year the income-tax department assembles an Annual Information Statement (AIS) — a file, tied to your PAN, that lists what *third parties have already reported about you*: the dividends companies paid you, the interest your banks credited, the shares and mutual funds you bought and sold, big-ticket transactions flagged under the SFT (Statement of Financial Transactions) rules. You didn't send the department any of this. Your bank, your broker, the fund registrars and the companies did — and the department has stitched it into one view of your financial year. The first time you open your AIS, it can feel like being watched. Reframe it: the AIS is a free, pre-built checklist of your own investment income — and it's the document that, ignored, turns into a tax notice.

It has two parts. Part A is general — your PAN, masked Aadhaar, name, date of birth, contact and address. Part B is the substance — TDS/TCS, the SFT high-value transactions, tax payments, refunds, and the 'other information' where your interest, dividends, and securities and mutual-fund transactions appear. Alongside the AIS sits the TIS (Taxpayer Information Summary) — a simplified, category-wise *aggregation* of the AIS. Here's the part that makes all of this matter: the values in the TIS pre-fill your tax return. Whatever the department thinks your dividend and interest income was flows straight into the return you file — so a wrong number in your AIS becomes a wrong number in your return unless you catch it.

Aarti opens her AIS for the year. She's a first-year investor — ₹9 lakh salary, ₹1.2 lakh in savings, a small SIP just started — so her investment lines should be tiny. She reads each one against her own records: her bank passbook, her broker's contract notes, her CAS.

Most lines check out. Her salary ₹9,00,000 matches her Form 16. Her savings-bank interest ₹3,000 and FD interest ₹2,000 match her passbook. Her dividend ₹1,500 matches the credits from her ETF and shares. Her mutual-fund purchase of ₹60,000 matches her SIP instalments for the year — and note it's a *purchase*, not income: the AIS tracks the transaction (reported under the SFT rules), but buying units isn't earning, so it stays out of her income total. Add her real investment income — SB ₹3,000 + FD ₹2,000 + dividend ₹1,500 = ₹6,500 — and it's exactly what she expected for a first year. But two lines are wrong, and they're the whole reason this lesson exists.

The two bad lines in Aarti's AIS are the ones that would quietly cost her. First, a dividend of ₹18,000 from a company she has never owned a single share of. It simply isn't hers — most likely someone else's dividend tagged to her PAN by a data error or a mix-up. Second, her real ₹2,000 FD interest appears twice — once from her bank and once again under an SFT feed — the same income double-counted. Together that's ₹20,000 of income the AIS is about to pre-fill into her return that she never earned (or, in the FD case, earned only once).

Here's why she cannot just shrug. If the ₹20,000 stays, one of two bad things happens. Either Aarti accepts the pre-fill and pays tax on income that isn't hers — at her new-regime slab that's roughly ₹2,000 of tax on the ₹20,000 (illustrative — at her ~10% marginal band; the exact figure is the income-tax track's job). Or she files a return that leaves the ₹20,000 out, it no longer matches the department's pre-filled figure, and the mismatch triggers an automated notice asking her to explain the gap. Both outcomes come from the same root: a wrong AIS entry she didn't correct. The fix is a built-in feature almost nobody uses — AIS feedback.

Next to every line in the AIS is a feedback control. You pick the option that describes what's wrong, and the department records your correction: the modified value shows up beside the reported value, the TIS updates (so your pre-fill changes), and your feedback may be sent to the source that reported it. These are the main options you choose from — the live portal adds a couple more (like 'Income is not taxable' and 'Transfer not in the nature of sale') for special cases, but these five catch the everyday errors:

So Aarti acts. On the phantom ₹18,000 dividend she selects 'Information relates to other PAN/Year' — it's not hers. On the duplicated ₹2,000 she selects 'Information is duplicate / included in other information.' The TIS updates, her pre-fill drops back to her real ₹6,500 of investment income, and the ₹20,000 problem is gone — in about five minutes, months before any notice could arrive. That is the entire point of reading the AIS: feedback is free, fast, and only possible if you actually look.

Pull the three documents together and you have one habit, not four chores. Reconciliation is the same move every time: the statement's total must equal the sum of its parts, and every entry must match a record you already have. The CAS's portfolio value equals its holdings. The contract note's net debit equals value plus charges. Every AIS line equals an entry in your own books — or you file feedback. When a total won't reconcile or an entry won't match your record, that's a statement mismatch — the one signal that says *investigate before this becomes a notice*. Do this reconciliation once a quarter and nothing can hide in the pile for long.

But reconciliation also does something quieter and just as valuable: it stops you panicking. Take Tanvi. She's sitting on a ₹50 lakh windfall she's parked carefully in liquid funds while she learns (her thread runs through Lesson 26 and the windfall lessons). She opens her AIS and her stomach drops: there's a 'redemption' of ₹5,00,000 — five lakh — a transaction she's sure she never made. Her first thought is the worst one: *someone has taken my money.*

She doesn't call the police. She reconciles. She pulls up her CAS and her fund statements and traces the ₹5,00,000: it left her liquid fund on the same day it arrived in a short-duration fund. It wasn't a withdrawal — it was her own switch between two funds, and the AIS records a switch as a redemption *and* a purchase, because that's technically what a switch is. The ₹5,00,000 never left her portfolio; it just moved rooms. Net effect on her money: zero. No fraud, no missing lakh — just a statement recording a switch in the alarming-looking way statements do. Reconciling turned a moment of terror into a thirty-second confirmation.

Step back and see what these documents are really for. The contract note and the CAS are your investment truth — what you traded, what you own. The AIS is the department's version of that truth, and it flows straight into your tax return. When the two agree, filing is effortless and the pre-fill just works. When they disagree and you haven't reconciled, you get taxed on the wrong number — either too much (you overpay) or too little (a notice). Reconciling the documents is therefore not tax *preparation*; it *is* the tax-safety step, done months early, for free, by anyone who can add up a column.

That's the whole reason a quarterly twenty-minute habit beats a frantic July. Suresh, with a large book and dozens of trades, catches a wrong charge or a mis-tagged dividend while it's fresh. The Iyers confirm their ₹15,00,000 portfolio is whole. Aarti kills a ₹20,000 phantom before it becomes a demand. Tanvi learns her lakh is safe without a sleepless night. None of them needed an accountant — they needed to open the PDF and check the sums. The tax *computation* that sits on top of these clean numbers is Lesson 41 (After-Tax Return) and the india:income-tax track; your job here is to make sure the numbers underneath are right.

The document that's supposed to protect you is also the document a fraudster imitates — because a statement that looks official lowers your guard. This is the lesson's specific danger, and it comes in three flavours: the fake CAS or forged contract note that mimics a real statement to steal your login or OTP; the 'your KYC has expired — click to update' phishing message dressed up as a depository notice; and the fabricated statement an unscrupulous broker or 'wealth manager' uses to hide a churned or unauthorised trade from you.

The deep defence is the one skill this whole lesson teaches: a fake statement cannot survive reconciliation. A forged portfolio won't sum to its holdings; a fabricated trade won't carry a matching contract note or a valid trade/order ID; a phishing 'statement' is exposed the moment you re-generate the real one yourself from NSDL/CDSL and compare. You don't need to be an expert in fraud — you need to be someone who checks that the numbers add up, which is exactly what a fraudster is betting you won't do.

Good wealth managers do something with these documents that looks like magic and is actually just discipline. Here's the move, decoded — so you can do it yourself for free, and so you can tell whether the one you're paying is earning their fee.

The through-line is that none of this needs a professional — the move is just arithmetic, done on time. If you pay a manager, what you're really paying for is the discipline to run the reconciliation every quarter and the judgement to act on what it turns up. So the moment a manager won't hand you the reconciled statement to check yourself is the moment you're paying for something you're not receiving — and the contract notes are exactly where churning hides, because a flurry of small trades each quietly generates brokerage while adding nothing. Read the card as your own quarterly checklist first, and as an adviser test second.

If you've been investing for years and never once opened your CAS or AIS — or if you opened one, saw a number you didn't understand, and closed it in a small panic — this is for you, and it is blame-free. Almost everyone does exactly this. The statements are dense, nobody teaches you to read them, and the natural response to a document you can't parse is to look away. You have not done anything wrong, and nothing is ruined.

Notice what the steps on that card have in common: each is small, each is reversible, and none asks you to understand everything at once. You open one document, you add one column, you flag one line. The dread was never proportional to the task — it came from the pile sitting unopened, not from anything actually inside it. A mismatch is not a catastrophe; it's a to-do with a clear fix, and the only thing that turns the fixable into the un-fixable is not looking. Start with the single easiest thing — open your CAS and read the total — and the rest stops feeling like a reckoning and starts feeling like a habit.

Now do the move yourself. The reconciler below runs the two checks this lesson is built on. In Portfolio (CAS) mode, enter each holding and the stated portfolio value — it tells you whether they add up and, if not, the exact gap. In AIS line mode, enter what the AIS reported and what your own record says — it tells you to accept the line or file feedback, and which option. It's pre-filled with the Iyers' CAS and Aarti's AIS, so you can watch the ₹15,00,000 reconcile and the ₹18,000 phantom dividend fail. Clear it and try your own.

The reconciler doesn't compute your tax and it isn't tax advice — it does exactly what your eyes should do on every statement: check that the parts sum to the whole, and that the department's number matches yours. Master that, and the pile of PDFs stops being something to fear and becomes the most useful thing in your inbox.

• Consolidated Account Statement (CAS) — a single statement, tied to your PAN, showing all your demat holdings plus your mutual-fund units, sent by the depositories (NSDL/CDSL); monthly if you transacted, half-yearly otherwise.
• Contract note — the legally required document your broker sends after every trade, showing the executed price, quantity, brokerage, STT, stamp duty, the unique trade/order IDs, and the net amount debited.
• Trade / order ID — the unique order and trade numbers (and times) on a contract note that fingerprint a transaction on the exchange; your proof a trade is real and yours.
• Statement of Account (SoA) — a statement covering one fund house's folios, issued by its registrar (RTA); the narrower cousin of the CAS.
• RTA (Registrar and Transfer Agent) — the back office (CAMS or KFintech) that keeps mutual-fund folio records and sends fund statements; not a fund and not a broker.
• Annual Information Statement (AIS) — the income-tax department's yearly file of what third parties reported about you (dividends, interest, securities and MF transactions); it pre-fills your return.
• Taxpayer Information Summary (TIS) — a simplified, category-wise aggregation of the AIS; its values are what actually pre-fill your tax return.
• AIS feedback — the built-in feature to flag an AIS entry as correct, not fully correct, relating to another PAN, duplicate, or denied — correcting the pre-fill before you file.
• Reconciliation — checking that a statement's total equals the sum of its parts, and that every entry matches a record you already hold; the core habit that catches errors, frauds and tax mismatches early.
• Statement mismatch — any entry or total that doesn't reconcile — a missing holding, a wrong charge, an AIS line that isn't yours — and the signal to investigate before it becomes a notice.