0.1 The account stack
Motivation
Before you can trade you need four or five accounts at three or four institutions, and you need to know which of them holds your money and which holds your shares at each moment. That knowledge is not bureaucratic detail: it is what protects you when a broker fails, an app goes down or someone asks for your OTP.
0.1.1Who holds what#
| Entity | What it does for you | Regulator | Examples |
|---|---|---|---|
| Bank account | Holds your money. Money moves from here to the broker and back. | RBI | Any scheduled bank |
| Stockbroker (trading member) | Sends your orders to the exchange, collects margins, settles with the clearing corporation on your behalf. Gives you a trading account identified by a unique client code (UCC). | SEBI; also the exchanges | Discount brokers; bank-linked or full-service brokers (0.1.4) |
| Depository participant (DP) | Opens and services your demat account, the electronic register of the securities you own. Usually the same company as your broker. | SEBI | Most brokers are also DPs |
| Depository | Keeps the master record of who owns which security (by ISIN, the 12-character security identifier). Your demat account lives at one of the two. | SEBI | NSDL, CDSL |
| Exchange | Runs the order book and matches buyers with sellers. | SEBI | NSE, BSE (equity, F&O); MCX (commodities) |
| Clearing corporation (CC) | Becomes the buyer to every seller and the seller to every buyer (novation), nets obligations, collects margins, guarantees settlement. | SEBI | NSE Clearing Ltd, Indian Clearing Corporation (BSE), MCXCCL |
| Registrar and transfer agent (RTA) | Keeps records for mutual funds and processes IPO allotments. | SEBI | CAMS, KFin Technologies |
Two consequences follow. First, your shares are not held by your broker: they sit in your own demat account at NSDL or CDSL, under your PAN, and you can see them there independently of the broker's app (0.1.5). Second, your counterparty in a trade is the clearing corporation, not the stranger who sold to you. The risk you carry that is not market risk is mostly broker risk: the broker mishandling your money or pledged securities. The rules in 0.1.5 exist to shrink it. M01 · 1.1 and 1.6 give the institutional detail.
0.1.2How money and shares move: a purchase and a sale under T+1#
Indian equities settle T+1: a trade done on trading day T settles on the next trading day (fully phased in on 27 Jan 2023; M01 · 1.6). An optional T+0 cycle exists for a list of large stocks, but participation by brokers is optional and volumes are small; treat T+1 as the operating regime.
Since 11 Nov 2024, shares are paid out by the clearing corporation directly into the client's demat account, instead of passing through the broker's pool account (SEBI circular of 5 Jun 2024, go-live 11 Nov 2024 per NSE's settlement page, https://www.nseindia.com/static/products-services/equity-market-securities-settlement). Shares bought with the broker's money under the margin trading facility go instead to a separate broker account for funded stock and are pledged.
A delivery purchase. You buy 40 shares on Monday (T).
| When | Money | Shares | What you see |
|---|---|---|---|
| Before the order | You transfer money from your bank to the broker (UPI or net banking). It appears as ledger balance / available margin. | – | Funds page |
| T, during market hours | The broker's risk system checks that you have enough funds and blocks them. | Order goes to the exchange; it trades. | Order book: "complete"; trade book: trade number and time; SMS/e-mail from the exchange |
| T, evening | – | – | Contract note (0.2.6) by e-mail |
| T+1 | Funds pay-in: the broker pays the CC from your money. | Securities pay-out: the CC credits the 40 shares to your demat account. | Holdings show the shares, first marked "T1", then settled |
A delivery sale. You sell those 40 shares on Thursday (T).
| When | Money | Shares | Authorisation |
|---|---|---|---|
| T | Most brokers let you reuse the sale value for new purchases the same day; you cannot withdraw it yet. | The shares are blocked in your demat account for early pay-in. | Either a DDPI you signed at account opening, or an e-DIS authorisation per sale (a CDSL TPIN plus OTP, or the NSDL equivalent). |
| T+1 | Funds pay-out from the CC to the broker; your ledger is credited. | Securities pay-in: the shares move from your demat account to the CC. | – |
| T+1 or later | You request a withdrawal; the broker sends money to your registered bank account. | – | Brokers may pay only to bank accounts registered in your name. |
The UPI block mechanism for the secondary market Under "trading supported by blocked amount", the money for your purchases stays in your bank account (earning savings interest) and is only blocked through a UPI mandate, as in an IPO application (0.5), and debited at settlement. SEBI made it optional from January 2024 and required qualified stock brokers (the largest brokers) to offer either this facility or a "3-in-1" bank-broker-demat account from 1 Feb 2025, in addition to the usual route (SEBI circular of 11 Nov 2024; NSE circular INSP65041; verify). Availability and limits depend on your bank and broker; check with them before relying on it.
Client funds held by brokers Money you leave with a broker is not supposed to stay with the broker overnight. Since 1 Jul 2023 brokers must upstream all client funds to the clearing corporation at the end of each day, as cash, lien-marked bank fixed deposits or overnight mutual fund units (SEBI circular of 8 Jun 2023 on upstreaming of clients' funds, on sebi.gov.in under Legal → Circulars, June 2023; amended 30 Jun 2023 and 12 Dec 2023). In addition, unused client money must be returned to your bank account in a running-account settlement every month or quarter (your choice), on the first Friday or Saturday of the period (SEBI circular of 28 Dec 2023; verify).
0.1.3KYC: what you will be asked for#
Account opening is online and takes a day or two. The pieces:
- PAN (permanent account number). Every market account in India is keyed to it; your tax statements are compiled from it (0.7).
- Aadhaar-based e-KYC (address and identity from the Aadhaar record or DigiLocker) and an Aadhaar OTP e-sign of the account-opening form.
- In-person verification (IPV), done by a short video call or a recorded selfie video with your PAN.
- KYC registration agency (KRA) and CKYC. Your KYC is uploaded to a KRA and to the Central KYC Records Registry (CKYC, run by CERSAI), so that the next intermediary can reuse it. A KRA status of "validated" lets you open further accounts, including with mutual fund houses, without repeating the process.
- Bank proof (a cancelled cheque or statement) to register the account that money may move to and from.
- Income proof, only if you activate the F&O or commodity segments (a bank statement, salary slip, ITR acknowledgement or demat holdings). Brokers must also show F&O clients SEBI's risk disclosure summarising its studies of retail losses (see 0.6; verify the current wording with your broker).
- Nomination. For a demat account in a single name you must either nominate or explicitly opt out. Under SEBI's circular of 29 May 2026, effective 1 Sep 2026, a demat account or mutual fund folio may have at most three nominees; if no percentages are stated the holdings are split equally (NSDL policy notice 2026-0130, Aug 2026). This replaced the earlier rule of up to ten nominees (effective 1 Mar 2025). Nominate: the transmission of securities to legal heirs without a nominee is slow and paper-heavy.
- DDPI (demat debit and pledge instruction). It authorises the broker to debit your demat account only for settling your sales, pledging for margin and a few similar purposes. It replaced the open-ended power of attorney (POA) in 2022 (SEBI circular of 4 Apr 2022, effective 1 Sep 2022; the pledge scope was extended in stages to January 2023; sources differ on exact dates). DDPI is optional. Without it you authorise each sale with e-DIS (TPIN + OTP), which is slightly slower and slightly safer.
0.1.4Choosing a broker#
There is no best broker; there is a broker whose trade-offs suit how you will use it.
| Criterion | What to check | Why it matters |
|---|---|---|
| Costs | Brokerage per order (flat, e.g. ₹20, or a percentage), delivery brokerage (zero at several discount brokers), DP charge per sell, account maintenance charge, call-and-trade fee, interest on MTF and on debit balances. Statutory charges (STT, stamp duty, exchange and SEBI fees, GST) are the same everywhere. | 0.2.7 shows that for small intraday and option trades the flat brokerage is the largest single cost. For a long-term investor the DP charge and annual fees dominate. |
| Platform | Web and mobile apps, charting, order types supported (GTT, OCO, iceberg), basket orders, how holdings and P&L statements are presented, tax P&L reports. | You will live in this software. Try the demo or the app's public screens first. |
| Reliability | Outage history during busy sessions (budget day, election results, expiry days), how the broker communicates outages, whether it offers a call-and-trade fallback. | An outage while you hold an intraday position is a real loss. Exchanges and SEBI require brokers to report technical glitches, and outages are widely reported in the press. |
| API access | Whether the broker offers a trading API, its price, and how it implements SEBI's retail algo framework (in force from 1 Apr 2026: algorithmic orders must come through the broker's registered API, tagged and from a whitelisted static IP; third-party platforms must be empanelled; SEBI circular of 4 Feb 2025, applicable to all brokers from 1 Apr 2026 under the circular of 30 Sep 2025; details in M01 · 1.4). | Relevant if you will automate later (M04, M05). Do not run live automated trading without a compliant setup. |
| Support | Response times, escalation path, the quality of the help centre. | You will need it the first time a corporate action or a margin call confuses you. |
Discount versus full-service. A discount broker offers execution, software and statements for low flat fees and no advice. A full-service broker (often bank-linked) charges a percentage of turnover and bundles research, a relationship manager and sometimes a 3-in-1 account linking bank, broker and demat. Research from your broker is not free: it is paid for by your turnover. This course assumes you will make your own decisions, which is the case a discount broker serves.
0.1.5Safety: how to check that your money and shares are where they should be#
- Your holdings at the depository. NSDL and CDSL each send you a Consolidated Account Statement (CAS) by e-mail covering all your demat accounts and (via the RTAs) mutual fund folios under your PAN. NSDL sends it monthly if there was any transaction in the month and half-yearly (for September and March) if there were holdings but no transactions (NSDL, "Know your CAS", https://nsdl.co.in, checked 6 Nov 2026). Reconcile it against your broker's holdings page. Both depositories also offer free online access to your holdings.
- Alerts. Exchanges send SMS and e-mail for trades executed under your PAN; depositories send alerts for every debit from your demat account. An alert you cannot explain is an emergency: call the broker and the depository.
- OTP discipline. Every sale without DDPI needs your TPIN and OTP; nobody legitimate will ask you for them.
- Paying an intermediary. Since 1 Oct 2025, SEBI-registered intermediaries collect UPI payments through validated handles ending in @valid (for example a broker's handle carries the suffix ".brk"), and SEBI's SEBI Check tool lets you verify a UPI ID or bank account before paying (SEBI circular SEBI/HO/DEPA-II/DEPA-II_SRG/P/CIR/2025/86 of 11 Jun 2025; verify). A request to pay a "broker" or "adviser" through an ordinary personal UPI ID is a warning sign.
- Pledges, not transfers, for margin. If you use shares as collateral for F&O margin, they stay in your demat account and are pledged (you approve the pledge with an OTP); they are not transferred to the broker.
- Grievances. Complaints go first to the broker, then to SEBI's SCORES portal, and then to the exchanges' online dispute resolution (ODR) platform.
0.1.6Red flags#
Most retail losses in India are self-inflicted by trading (0.6). The rest are inflicted by people who sell you trading.
- Tip groups. Telegram and WhatsApp groups that send "calls" are often the selling end of a pump-and-dump: the operators buy an illiquid stock, recommend it to thousands of members, and sell into the buying. SEBI has passed many orders against such schemes. Rule: if you received a stock tip from a stranger, someone has already bought it.
- Finfluencers. Since the SEBI amendment notified on 29 Aug 2024, SEBI-regulated entities (brokers, advisers, fund houses) may not associate with persons who give investment advice or make claims about returns without being registered. A circular of 29 Jan 2025 bars market "educators" from using price data from the most recent three months (SEBI (Intermediaries) Regulations as amended in Aug 2024, and SEBI circulars of 22 Oct 2024 and 29 Jan 2025; verify). Check any adviser's registration number (investment adviser, IA, or research analyst, RA) on SEBI's website before paying for anything.
- Two SEBI cases worth reading in full.
- Mohammad Nasiruddin Ansari ("Baap of Chart"). SEBI's interim order of 25 Oct 2023 impounded ₹17.2 crore of fees collected through trading "courses" that, SEBI found, amounted to unregistered advice with misleading profit claims; a final order in December 2024 directed refunds of about ₹17.2 crore and market bans of up to a year (SEBI orders, sebi.gov.in → Enforcement → Orders; amounts as reported, verify against the orders).
- Avadhut Sathe Trading Academy. SEBI's interim order of 4 Dec 2025 impounded ₹546.16 crore; a final order of late October 2026 is reported to direct a refund of ₹546.17 crore, penalties totalling ₹11.5 crore and a two-year ban (very recent; verify against the order on sebi.gov.in).
- Guaranteed returns. Nobody can guarantee a market return. Schemes promising "2% a month", "assured profit algos" or "account handling" (someone else trades your account for a profit share) are either unregistered portfolio management, which is illegal, or fraud. Never share your login.
- Impersonation. Fake apps and websites copying real brokers, and "institutional account" or "IPO quota" offers on social media, are common. Install apps only from the broker's official site and pay only through @valid handles.