The 3 accounts: bank, demat and trading

Your bank account holds money. Your trading account is opened with a broker; it lets you send orders and track trading funds and dues. Your demat account records your securities electronically through a depository participant, or DP. Money and shares are kept in different records.

An online application may open trading and demat together and link the bank account you already have. It does not open a new bank account. A broker may also be a DP, but these are separate registered roles. Sahi is both: a stock broker and a CDSL DP.

Follow one example. After activation, Mr. Chartist moves ₹5,000 from his own HDFC Bank account to Sahi (an illustration amount). He buys 10 shares of ITC Ltd on NSE at ₹260.80, the closing price on 19 October 2026: 10 × ₹260.80 = ₹2,608.00 before charges (derived). That leaves ₹2,392.00 before charges and other dues (derived). The ₹5,000 transfer itself bought nothing; the order did.

Settlement completes the payment and the share delivery. Indian cash shares settle T+1, on the next settlement day. 20 October 2026 was an NSE holiday (Dussehra), so a trade on 19 October would normally reach his CDSL demat account on 21 October (derived). Check the exchange's settlement holiday list for any real date.

A delivery purchase means buying shares to receive them into your holdings, not closing the position the same day. An order marked submitted may still be waiting, rejected or partly filled, so check its actual status.

KYC records your identity and address. The account-opening documents add services, risk disclosures, charges and instructions. An app can spread these over several screens instead of two paper forms.

Before starting, check the legal entity, the account type and the services offered. Sahi's official site names Aaritya Broking Private Limited as its broking entity. We use its published sign-up route as an example, not as a claim that every Indian account follows the same steps.

The bank link connects your market money with an account in your own name. Enter the account number and IFSC carefully. IFSC, the Indian Financial System Code, has 11 characters: four letters for the bank (HDFC for HDFC Bank), then a 0, then six characters for the branch. Copy these from your real bank records; never guess them.

The provider checks that the account is yours, for example with a small test transfer or another approved check. If that fails, it may ask for bank proof such as a cancelled cheque or statement. Proof does not fix wrong details. Use the provider's current list of accepted documents.

A common snag: your PAN shows your full name while the bank record shows an initial (an illustration, not Mr. Chartist's case). If the check fails, read the rejection message, compare the names, and use the provider's correction process with genuine evidence. A name mismatch never justifies changing a document.

Money must come from your own linked bank through the official channel. Sahi's help pages say money sent from a non-linked bank account fails third-party validation (TPV). A friend's payment is not a shortcut.

Adding money is not placing an order. Your app's cash balance may also differ from the amount you can withdraw, because of open orders, unsettled trades or other dues. Check the right balance before assuming the money is free.

India has two depositories, NSDL and CDSL. You cannot open an account with them directly; a DP opens and services it for you. Your app shows holdings, while depository statements let you check the record yourself.

The UCC, or Unique Client Code, is your trading identity with the broker, linked to your PAN. It is not your demat account number. Your client master lists your demat account details. Save these numbers safely and do not treat them as one account ID.

A CDSL account number, the BO ID, has 16 digits: the first 8 are the DP ID and the last 8 are your client ID. CDSL's own booklet uses the sample 12010000 00000001. An NSDL account number is 'IN' plus six digits for the DP, then an 8-digit client ID (format as described in broker guides; check your own client master). The visual shows shapes only, not real customer numbers.

A DP's SEBI registration number is a different thing again. It identifies the registered firm, not your account. Sahi publishes its CDSL DP registration as IN-DP-780-2024. That is neither your demat number nor the 8-digit DP ID at the start of your BO ID. Check the current entity and registration on official records before relying on copied details.

When the welcome records arrive, check that the holder name, depository, bank and contact details match your application. Keeping a demat account open is not the same as every related service being free.

The form is a set of instructions and agreements. Read the rights and obligations, the risk disclosure, the provider's policies and the tariff. The tariff lists charges; the risk disclosure says what can go wrong. An electronic signature does not make either less important.

A market segment is a part of the market you ask to use. Cash shares and derivatives are separate choices. Futures and options, or F&O, are optional in Sahi's sign-up steps and need income proof. A cash-share account does not need every segment switched on.

Derivatives can involve leverage, margins, expiry and settlement duties unlike a fully paid share purchase. Some contracts can end in physical delivery. Income proof is a suitability and compliance check; its acceptance does not make a complex product safe for you.

Extra consents can cover electronic communications, running-account settlement or limited share-debit instructions. For each, read the purpose, whether it is required or optional, how long it lasts and how to cancel it. Running-account settlement is about how your unused funds are held and returned; it is not permission for anyone to trade for you.

Mr. Chartist wants to learn fully paid share purchases first. He switches on cash shares and leaves F&O off for now. This is a teaching choice, not a rule every learner must follow.

Keep or download the signed documents. If a ticked option is unclear, stop and ask official support what it allows. A tick box should be an informed choice, not a way to reach the next screen.

Sahi publishes eight sign-up steps in its app: download the app; verify your phone and email; check documents through DigiLocker; link your bank account; enter personal details and take a selfie; set account preferences; add income proof if you want F&O (optional); then sign on the trackpad and eSign with your Aadhaar number. Follow the current official steps if the screens differ.

The DigiLocker route needs your Aadhaar number and the mobile number linked to it. That is a need of this route, not proof that Aadhaar is the only possible identity document for every Indian demat account.

Submitting is not activation. The provider checks your details, documents and KYC status. A mismatch can bring a request for clarification or a rejected step. Track the application in the official app and keep its reference.

Sahi says accounts are usually activated within 48 hours after the steps are done. That is the provider's own estimate, not a promise for every application. Missing documents or failed checks can take longer.

Once active, check the welcome records: trading code, demat details, linked bank, enabled segments, nomination and contact details. Set secure login and confirm alerts reach your own phone and email.

Only then think about adding money from your own linked bank. You do not need to place a trade to prove the account works. Understanding the account comes before using it.

KYC means Know Your Client. It lets a firm confirm your identity, address and other key details. PAN, the Permanent Account Number, is the tax ID normally needed on this route. Identity and address also need proper evidence under the KYC rules.

Have ready: your own phone and email, PAN, the identity and address proof the route accepts, bank details, a clear photo or live selfie, and your signature. F&O adds income proof. Take the exact document types and formats from the provider's current instructions.

Aadhaar authentication or DigiLocker can support an online route. On that route, SEBI does not require in-person verification (IPV); for other routes, IPV can be done by video (SEBI circular, 24 April 2020). Other valid documents and processes exist under the wider KYC rules; one app's route is not the whole law. If you cannot use it, ask the provider what else it supports.

A selfie or live check shows that you match your documents. Follow the lighting and framing tips; avoid covered faces, edited images, expired papers or blurry scans. Never send documents to an unexpected chat claiming to be support.

A KYC Registration Agency, or KRA, holds your securities-market KYC record. SEBI's register lists CVL KRA (CDSL Ventures, a CDSL subsidiary), NDML (NSDL Database Management), CAMS Investor Services, Karvy Data Management Services and KFin Services. Existing KYC can be reused, but a new broker still runs its own checks. 'I did KYC once' does not mean you skip every screen.

Common problems: name mismatch, wrong date of birth, old address, wrong bank details, a blurry selfie or the wrong income document. Fix the exact issue with genuine evidence through the official upload channel. If a rejection is unexplained, raise it with the reference and message instead of guessing.

eSign is the electronic signing step; an OTP is a one-time password that confirms an action. Read the documents before you sign. Enter a code only inside the official flow you started, and never tell it to anyone. Save the signed documents and check they match your choices.

A nominee is a person named to receive your holdings after your death. Nomination makes the paperwork easier; it does not replace a will or settle every question of inheritance law.

SEBI's circular of 29 May 2026, in force from 1 September 2026, says a new single-holder account must have a nomination unless the holder signs the prescribed opt-out declaration. For joint accounts, nomination is optional, and all holders must agree to add or change it. You can name up to three nominees and change or cancel them any number of times.

Each nominee needs a name and relationship (and date of birth if a minor). A percentage share is optional. Online, the nomination is confirmed by Aadhaar eSign, a digital signature, or an OTP sent to your registered mobile and email. Keep the acknowledgement.

If no percentages are given, the holdings are split equally, and any odd share goes to the first nominee named. Example (derived, on Mr. Chartist's 10 ITC shares, two nominees): no percentages gives 5 + 5. With a 60/40 split (a teaching allocation), 10 × 60% = 6 and 10 × 40% = 4. With 11 shares and no percentages, 5 each and the odd share to the first nominee: 6 + 5 = 11.

If you opt out, read the declaration. It warns that your heirs may need extra legal or court documents, and that unclaimed holdings may end up with the Investor Education and Protection Fund (IEPF). Accounts with no nomination get reminders from the DP twice a year and a pop-up at the first login of the day. Choosing to opt out is different from leaving a screen unfinished.

Review the recorded nomination after activation and update it when life changes. For a minor nominee, a joint account or an actual claim, follow the DP's current requirements; this example does not replace them.

This lesson covers an adult resident individual. Sahi says any retail investor above 18 can open an account. Do not assume a provider that accepts this category also accepts joint, minor, non-resident or company accounts.

A single-holder demat account has one holder. A joint account has more than one named holder and needs their consents and operating instructions. A demat account is generally limited to three holders; whether a given app offers joint accounts is a separate question.

A minor's demat account is run through a guardian. It is not an adult's unrestricted trading account. What it allows, and how it changes when the minor turns 18, depend on the DP's and the regulator's current rules.

Non-resident and company accounts need different documents, banking and permissions. Sahi's FAQ says it does not currently support NRI accounts. If your residency changes, tell the provider instead of keeping a wrong resident profile.

A Basic Services Demat Account, or BSDA, is a low-cost demat account for small holdings. You qualify if it is your only demat account as sole or first holder, you have only one BSDA across both depositories, and your holdings are worth no more than ₹10 lakh at any time (SEBI circular, 28 June 2024). Maximum yearly maintenance (AMC): nil up to ₹4 lakh, ₹100 from ₹4 lakh to ₹10 lakh; above ₹10 lakh it becomes a regular account.

Since 31 March 2026, an eligible account is opened as a BSDA by default unless you agree to a regular account; DPs review eligibility every quarter, and delisted, suspended and zero-coupon zero-principal holdings are left out of the limit (SEBI circular, 24 December 2025). Mr. Chartist's 10 ITC shares, about ₹2,608 (derived), sit well inside the nil-AMC band. Sahi charges no AMC on its accounts anyway.

If your situation does not fit the published route, confirm support before uploading documents or paying. Choose the right holder category from the start; a normal individual form is not a substitute for a special account.

A delivery sale means shares must leave your demat account for settlement. Placing a sell order and allowing that debit are related but separate actions.

DDPI means Demat Debit and Pledge Instruction. SEBI introduced it in 2022. Today it is an optional, limited permission for four purposes only: delivering shares for settlement; pledging or re-pledging for your own margin; mutual-fund orders on exchange platforms; and tendering shares in open offers.

It is not permission to withdraw your bank money, move shares for any other reason, or trade for you. Read the scope and how to revoke it. Older Powers of Attorney stay valid until revoked, but a DDPI is not an unlimited PoA.

DDPI is optional (SEBI FAQ). Without it, you approve each sale's debit through eDIS: CDSL sends a TPIN to your registered mobile and email, and you confirm with the TPIN and an OTP. On Sahi, eDIS is the default and an approval lasts for that trading day.

Sahi's DDPI costs ₹100 + 18% GST = ₹118, one time, and is usually active within one working day (Profile > DDPI > eSign with Aadhaar OTP). Read the live terms; prices can change.

Example: Mr. Chartist later sells his 10 ITC shares. Either route can approve the delivery debit. Sahi charges a DP fee of ₹13.50 per company on a sale. Neither route guarantees the price or skips other settlement checks.

Selling shares is different from pledging them as collateral. A pledge backs margin and has consequences if dues are unpaid. Never share your TPIN, password or OTP with anyone offering to approve things for you.

A familiar logo or a smart app is not proof of registration. Check the legal entity and what it is allowed to do on official SEBI, exchange and depository records. Broker registration, DP registration and research permission are different things.

Sahi's official site lists Aaritya Broking Private Limited (CIN U66120KA2023PTC180274), SEBI stock-broker registration INZ000317632, NSE member code 90375, BSE member code 6867, and CDSL DP registration IN-DP-780-2024. Its grievance emails are grievance@aaritya.com and, for demat issues, dpgrievance@aaritya.com. A copied registration number does not prove a message came from the real firm.

Start from the official website, not an ad or a link in an unexpected group. Fake apps, remote-access requests and 'VIP' tip groups copy real brands. Never install screen-control software so a stranger can do your KYC or place a trade.

Pay only through the official bank or payment channel shown in your account, never to a staff member's or stranger's personal account. Since 1 October 2025 (as reported), registered brokers' UPI IDs use the @valid handle, and SEBI Check lets you confirm that a UPI ID or bank account and IFSC belong to a registered firm. Do not accept a screenshot as proof.

Warning signs: a person asking for your OTP or password, an urgent freeze threat, a promise of assured returns, or a request to hide transactions. Codes belong in the official flow you started, not in a call, chat or screen share.

If you suspect misuse, stop further transfers, lock your access through official support, and keep transaction references and messages. Report quickly through the right channels. Registration gives a regulatory framework; it does not guarantee you get every loss back.

Separate the cost of opening an account from the cost of keeping and using it. A provider can offer free opening while trades, special services and statutory charges still cost money.

Sahi's pricing page lists: account opening ₹0; AMC free; brokerage zero for the first 30 days after the account is ready, then ₹10 or 0.05% per order, whichever is lower; a DP charge of ₹13.50 per company on sales; and ₹15 + GST per pledge, un-pledge or invocation. Check the live page; tariffs change.

Example (derived): Mr. Chartist's buy of 10 ITC at ₹260.80 is ₹2,608.00. In the first 30 days, brokerage is ₹0. After that, 0.05% × ₹2,608.00 = ₹1.30, which is lower than ₹10, so brokerage is ₹1.30. A later sale adds the ₹13.50 DP charge.

Trading also brings statutory charges: STT, exchange fees, stamp duty and GST. A contract note records each trade and its charges; a DP or funds statement may show other entries. The brokerage-and-taxes lesson works through these in full.

Estimate the whole round trip before you act: buying, later selling, any demat debit, and the charges and taxes. A price gain alone is not your net profit. Account opening does not settle your personal tax treatment.

If a charge on a statement is unclear, compare the date, tariff and service with official support, and save the reply. An unused account can still have obligations under its terms; inactivity is not closure.

Before the first order, confirm the holder and bank details, that only the segments you want are on, that nomination or opt-out is recorded, that the debit permission matches your choice, and that alerts reach your own phone and email. Check your available funds, understand the order type and read the reason if an order is rejected.

Adding money is not investing, and an open account creates no duty to trade. You can first practise reading a quote, finding the right company and exchange, and working out charges. The first-order lesson covers the steps when you are ready.

After a trade, each record has its own job. The order history shows whether the order filled; the contract note records the trade and its charges; the funds ledger records money movements; the holdings statement shows the shares in your account. The funds ledger is just the account's money record, not another bank account.

Back to the example: Mr. Chartist's order history shows the 10 ITC shares filled on 19 October; the contract note for that day shows ₹2,608.00 before charges; the Sahi funds ledger shows the debit; and his holdings show +10 ITC after settlement on 21 October (derived). CDSL also sends a Consolidated Account Statement (CAS): monthly if there was any activity, half-yearly if there was none.

Update changes to your name, address, bank, residency, phone, email and nomination through the provider's or KYC process. Keep the acknowledgements and check the update. Strong, unique passwords and two-step login protect access; a new phone or lost SIM is a reason to review it.

If you stop using the account, ask about inactivity, reactivation and closure. Closing trading and closing or moving demat holdings can be different steps. Clear open orders, positions, dues and balances, and give instructions for any remaining shares before assuming the account is closed.

Ask for written confirmation when it is done. An account does not close just because you stop logging in. Keep the records you may need for tax, holdings or complaints after access ends.

For a problem, first write to the firm's official grievance route (for Sahi, grievance@aaritya.com, or dpgrievance@aaritya.com for demat issues) and keep the reference. If it is not resolved, use the exchange or depository, then SEBI SCORES; SMART ODR offers online dispute resolution. These channels do not repay ordinary market losses just because a share fell.

The account is an access and record-keeping system. A financial decision still needs you to understand the asset, the costs, the risks and your own situation.