Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Short answer: Nifty 50 futures are exchange-traded index contracts available in a maximum three-month cycle—near, next and far month. Monthly contracts normally expire on the last Tuesday of the expiry month, or the previous trading day when that Tuesday is a trading holiday. Initial margin is collected upfront under NSE Clearing’s SPAN risk system, so the amount changes with the position and current risk parameters rather than remaining fixed.
The exact lot size, live margin estimate and settlement-price mechanics must be checked in the current NSE contract files, NSE Clearing risk parameters and your broker’s order screen. The figures below explain the rules published by NSE, not a personal trading recommendation.
As an Amazon Associate I earn from qualifying purchases.
What a Nifty 50 futures contract represents
NSE classifies the instrument as an index future (FUTIDX) on the NIFTY 50 index. You are entering a standardized exchange contract whose value is linked to the index level, rather than buying the individual shares that make up the index. The contract trades from its introduction date through its expiry date under the specifications set by NSE and cleared by NSE Clearing.
Recommended Free Tools
“Nifty futures” is sometimes used loosely for futures on several Nifty-family indices. When checking specifications, use the precise name Nifty 50 futures; the expiry, lot size and margin fields for another index can be different.
#1 Best Overall
Which contract months are available?
NSE provides a maximum three-month cycle for Nifty 50 futures:
| Contract month | Meaning | What to check before trading |
|---|---|---|
| Near month | The contract with the shortest remaining time to expiry. | Its exact expiry date, current volume and the margin shown for your position. |
| Next month | The following listed monthly maturity. | Whether its price, liquidity and spread suit the time horizon you actually need. |
| Far month | The third listed monthly maturity. | Wider spreads or different risk parameters may make the displayed requirement unlike the near-month contract. |
When the near-month contract expires, NSE says a new three-month contract is introduced on the next trading day. The cycle therefore rolls forward rather than offering an unlimited list of monthly maturities.
When does a Nifty futures contract expire?
NSE’s stated rule is: “Nifty 50 futures contracts expire on the last Tuesday of the expiry month. If the last Tuesday is a trading holiday, the contracts expire on the previous trading day.” This is a monthly rule; it is not safe to assume that every calendar month’s last Tuesday is a trading session.
For a particular contract, verify three items together:
- the expiry date displayed in the active NSE contract listing;
- the official exchange holiday calendar for that date; and
- your broker’s product page, which should map the exchange symbol to the same maturity.
The contract listing is the controlling reference for the instrument you can actually select. Do not infer the date from a generic calendar, an old screenshot or a previous month’s contract.
How the futures lifecycle works
- Introduction: NSE lists a new maturity as part of the three-month cycle.
- Trading period: The contract can be bought or sold while it is listed and before its expiry session ends, subject to exchange trading and risk controls.
- Risk recalculation: NSE Clearing recalculates required margins as positions, prices and risk parameters change.
- Expiry: The contract reaches the exchange-defined expiry date, adjusted to the previous trading day when the last Tuesday is a holiday.
- Post-expiry processing: Positions are handled under the current NSE Clearing settlement and close-out rules. Check those rules for the exact price, timing and account-entry mechanics.
How margin is determined
Initial margin is collected upfront
NSE states that NSE Clearing collects initial margin upfront for all open positions of a clearing member, based on margins computed by NSE Clearing-SPAN®. Your broker passes the relevant requirement to your trading account, but the requirement originates in the exchange clearing framework.
Initial margin is therefore not a permanent “Nifty futures margin” number. It changes with the contract, your position, market conditions and the risk parameters in force at the time. A margin figure shown on a broker website can become stale when the exchange updates its files.
The published VaR basis
NSE describes the initial-margin basis as a 99% value-at-risk measure over one day. For futures in the circumstance where next-day mark-to-market collection cannot be completed before trading begins, NSE describes a two-day horizon. This is a risk-calculation horizon, not a forecast that the index will move by a particular percentage.
SPAN evaluates the risk of the open portfolio using current inputs. Consequently, two traders holding the same contract can see different total requirements if their other positions change the portfolio’s risk, and the same trader can see a different requirement after a volatility or parameter update.
Extreme-loss margin and the expiry-day change
NSE’s equity-derivatives margin information lists an extreme-loss margin of 2% of notional value for index derivatives. Treat that as the published parameter, not a timeless rate: confirm the current NSE Clearing risk file before placing an order.
For index-futures positions in contracts expiring that day, NSE says there is no calendar-spread extreme-loss-margin benefit from the start of expiry day. A calendar spread is a position involving different contract months. SPAN explains that calendar-spread charges account for the risk that the months do not move in perfect correlation. Losing the expiry-day benefit can increase the requirement even when you hold offsetting months.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
A spread reduces some exposure; it does not eliminate market risk, liquidity risk or the possibility that the exchange changes the charge. Do not assume that labeling two legs a “spread” guarantees a lower margin on expiry day.
Why the lot size matters
NSE says the contract value at introduction may not be less than ₹15 lakh. This is a minimum contract-value threshold stated by NSE, not the current number of index units in every lot.
The exchange may stipulate or change the permitted lot size. The source specification available for this article did not expose the current lot-count value, so an assumed quantity should not be used for an order or a notional calculation. Open the latest dated NSE contract file and confirm:
- the lot size in index units;
- the resulting notional value at the current index level;
- any quantity-freeze or maximum-order limits; and
- the effective date of the file.
Multiplying an old lot size by today’s index level can materially understate or overstate exposure. The ₹15 lakh statement also does not mean that ₹15 lakh is the cash margin you must deposit; margin is a risk-based requirement and is normally only a fraction of notional value, subject to the live parameters.
What “settlement” means—and what you must verify
Settlement covers the clearing of obligations during the life of a futures position and the processing of the contract at expiry. The exchange’s margin framework refers to daily mark-to-market collection and to a final settlement process, but the exact current formula, price source, timing and account credit or debit schedule should be taken from the applicable NSE Clearing rules.
The following details are not stated here because they require the current Clearing document for the relevant contract:
- the precise daily mark-to-market calculation;
- the final settlement-price formula and the market data window used;
- when a daily debit or credit becomes available in your trading account;
- how a holiday-adjusted expiry changes processing dates; and
- the broker’s cutoff, auto-square-off and funds-release procedures.
Before trading close to expiry, locate the current NSE Clearing settlement-price and settlement-mechanism rules, then compare them with your broker’s contract note and risk disclosures. Do not rely on a blog that gives a formula without identifying the applicable version and effective date.
Exchange margin versus a broker’s displayed amount
The exchange sets the clearing-risk requirements; your broker’s platform displays what it will ask you to maintain for the order and position. Those screens are useful operational estimates, but they are not a substitute for the current NSE Clearing parameters. Differences can arise from the exact portfolio entered, the time of the quote, intraday risk changes and the broker’s own risk controls.
Use this sequence when a displayed amount looks unexpected:
- Confirm the exact symbol, expiry month and lot quantity.
- Check whether the order creates a single leg or a calendar spread.
- Refresh the quote and margin calculator; do not use a saved screenshot.
- Check the latest exchange margin and risk-parameter publication.
- Ask the broker how its screen treats blocked funds, existing positions and expiry-day risk.
Choosing among near, next and far month
There is no universally best maturity. Compare each contract on the factors that can change your cost and execution:
| Question | Why it matters |
|---|---|
| How much time remains to expiry? | A shorter maturity reaches the expiry process sooner; a longer one may better match a longer planned holding period. |
| What is the current liquidity? | Trading activity and bid-ask conditions affect how easily an order can be entered or exited. |
| What margin does the live calculator require? | Requirements are position- and parameter-dependent, not fixed by the month name. |
| Will the position be open on expiry day? | Index-futures calendar-spread extreme-loss-margin treatment changes from the start of the expiry day. |
These are comparisons, not a signal to select one month. A contract that appears cheaper on margin can still have poorer liquidity or a nearer operational deadline.
Pre-trade verification checklist
Complete this checklist immediately before submitting an order:
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitches- Instrument: Confirm that the symbol is Nifty 50 futures, not a different Nifty-family index.
- Maturity: Record the near, next or far month and its exact exchange expiry date.
- Holiday status: Check whether the last Tuesday is a trading holiday and therefore moves expiry to the previous trading day.
- Lot size: Read the latest dated NSE contract file rather than relying on a remembered quantity.
- Notional exposure: Multiply the current index level by the verified lot size and number of lots.
- Margin: Capture the broker’s live estimate and confirm what exchange risk parameters it reflects.
- Spread treatment: If using multiple months, check whether any expiry-day calendar-spread benefit will disappear.
- Settlement rules: Read the current NSE Clearing documents for daily and final settlement timing and price methodology.
- Account readiness: Leave a buffer for an increased requirement; a position can require more funds after a risk-parameter change.
Common mistakes and how to avoid them
Using an old lot size
Lot sizes can be stipulated or changed by the exchange. Correct the mistake by checking the effective contract file and recalculating notional value before sending the order.
Best Value
- Language: english
- Book - trading: technical analysis masterclass: master the financial markets
- It is made up of premium quality material.
Treating margin as a purchase price
Margin is collateral for a leveraged futures position, not the contract’s full economic value. Compare the margin with the verified notional exposure and understand that losses can change available funds.
Assuming the last Tuesday is always tradable
A holiday moves expiry to the previous trading day. Check the exchange holiday calendar and active contract listing together.
Expecting a spread exemption on expiry day
NSE removes the calendar-spread extreme-loss-margin benefit for index-futures contracts expiring that day from the start of the session. Recheck the required funds before carrying both legs into expiry.
Confusing a broker estimate with an exchange rule
A platform’s margin number can reflect a particular portfolio and time. Verify the live figure, then consult the current NSE Clearing parameters when the amount changes.
Quoting a settlement formula from memory
Settlement-price methodology and cash timing are rule-specific and can be updated. Use the current NSE Clearing settlement documents and your broker’s disclosures instead of an undated explanation.
How to keep the information current
NSE’s contract-specifications page carried an update date of 11 August 2026, and the official pages used for the margin and contract rules were accessed on 13 October 2026. Those dates identify the version context; they do not freeze the rules. Before every new position, check for a later contract file, holiday calendar, SPAN input or risk-parameter release.
For an auditable record, save the contract symbol, expiry, lot-size file date, margin-screen timestamp and the settlement-rule document version alongside your order notes. This makes it easier to explain a later margin change or reconcile a contract note.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Key takeaways for Nifty futures traders
- Nifty 50 futures are FUTIDX contracts on the NIFTY 50 index, offered in near-, next- and far-month maturities.
- Monthly expiry is the last Tuesday, moved to the previous trading day when that Tuesday is a holiday.
- NSE Clearing collects initial margin upfront through SPAN; the published basis is 99% one-day VaR, with a two-day horizon in the specified mark-to-market collection circumstance.
- Index-derivatives extreme-loss margin is listed at 2% of notional value, and expiring index-futures positions lose the calendar-spread extreme-loss-margin benefit from the start of expiry day.
- The ₹15 lakh figure is a minimum contract value at introduction, not the current lot size or the margin deposit.
- Exact lot size, live margin and daily/final settlement mechanics must be verified against current NSE, NSE Clearing and broker information.
This framework lets you identify the contract, estimate the exposure and prepare the required funds without treating a changing exchange rule as a permanent number. It is educational information, not individualized financial advice.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
