
Introduction to Mark to Market (MTM) Accounting
Mark to Market (MTM) sounds technical, but the idea is simple. It means valuing assets or contracts at their current market value, not the price at which you purchased them. In India’s fast-moving stock and derivatives markets, the daily revaluation keeps books honest.
Think of it like a cricket scoreboard. You don’t wait till the end of the match to update runs. Every ball bowled, every shot hit, the scorecard changes instantly. MTM works the same way. It updates your financial position every single day.
For traders, MTM decides whether you’re sitting on a profit or a loss when markets close. For mutual fund investors, it keeps NAVs fair. And for regulators, it ensures no one hides behind inflated or outdated numbers.
Importance of MTM in Financial Markets
In India, where daily trading volumes in F&O cross ₹1,50,000 crore, price transparency is everything. MTM brings that clarity.
Without MTM, brokers and clearing houses would carry huge risks. Imagine a trader losing lakhs in futures but still showing “purchase price” on the books. If he defaults, who pays? MTM ensures such losses are squared off daily, avoiding massive defaults.
For investors, MTM protects trust. When you invest in mutual funds, you expect today’s NAV to reflect today’s market prices. That’s possible only because fund houses use MTM valuation for portfolios.
In short, MTM keeps India’s markets clean, fair, and trustworthy. It’s the backbone of risk management for both small retail traders and big institutions.
How Mark to Market Works
Mark to Market is a daily exercise, and it runs like clockwork.
Daily Revaluation of Assets
At the end of each trading day, exchanges like NSE and BSE calculate closing prices of stocks, futures, and options. Based on these, your open positions are reevaluated. If your futures contract gains, your account gets credited. If it loses, money is debited.
This isn’t optional. Clearing corporations adjust every trader’s margin daily. The idea is simple: no carry-forward of unrecorded losses.
Impact on Profit and Loss Statements
For traders, MTM impacts daily profit and loss (P&L). You may have bought a Nifty future at 22,500. If it closes at 22,800, the ₹300 gain per lot reflects instantly in your ledger. The same applies if it closes lower.
For companies, MTM affects balance sheets. Suppose a bank holds government bonds. If yields rise, bond prices fall. Under MTM, that fall must be recognized in financial statements. It shows up as a loss for the quarter, even if the bank hasn’t sold those bonds yet.
Role in Risk Management
MTM isn’t just accounting. It’s a risk shield. Daily settlement prevents the build-up of massive losses that can shake the system. After the Harshad Mehta scam in the 90s, SEBI made MTM a cornerstone of clearing processes in India.
By collecting MTM margins every day, exchanges protect themselves, brokers, and ultimately retail investors from domino defaults.
MTM in Different Market Segments
MTM plays out differently across markets in India.
MTM in Futures and Options (F&O)
In F&O, MTM is the rule of the game. NSE and BSE settle all open contracts daily based on closing prices. Traders either receive profits or record losses before the next trading session.
This daily MTM adjustment keeps leverage in check. Without it, small traders could pile up unsustainable losses.
MTM in Mutual Funds and NAV Calculations
Mutual fund NAVs are updated daily using MTM. Every stock or bond in the portfolio is valued at the closing market price. That’s why if Sensex falls 500 points in a day, you see the NAV of equity funds drop the very next morning.
Without MTM, fund houses could show inflated values, misleading lakhs of investors.
MTM in Accounting and Financial Reporting
In corporate India, MTM is widely used for assets like bonds, derivatives, and foreign exchange contracts. RBI mandates banks to apply MTM on investment portfolios, especially Available for Sale (AFS) securities.
So when interest rates move, banks record “MTM gains or losses” on bond holdings. These reports often make headlines every quarter.
MTM Margin in Derivatives Trading
MTM margin is what keeps F&O trading secure.
What is MTM Margin in Futures?
When you trade futures, you deposit an initial margin. But that’s not enough. Every day, the MTM margin is added or deducted based on the closing price. If you make profits, your margin account grows. If you make losses, you need to top up.
For example: You bought Nifty futures at 22,500. Market closes at 22,300. Loss of 200 points × 50 lot size = ₹10,000. This loss is debited on that day itself.
How Brokers Handle MTM Adjustments
Brokers act as middlemen. Exchanges send them MTM obligations daily. Brokers then debit or credit client accounts accordingly. If a client doesn’t have enough balance, brokers send margin calls.
This ensures no one carries forward a loss that can endanger the clearing system.
Examples of MTM Calculations
- Buy Bank Nifty future at 48,000. Close at 48,500. Gain = 500 × 25 = ₹12,500. Credited.
- Buy Reliance Future at ₹2,400. Close at ₹2,350. Loss = ₹50 × 250 = ₹12,500. Debited.
These daily MTM moves decide whether you continue trading or need to add funds.
Advantages and Disadvantages of MTM
Pros: Transparency, Real-Time Valuation
The biggest strength of Mark to Market lies in its transparency. Every day, traders, brokers, and investors know the real value of their holdings. For mutual fund investors, this means NAVs truly reflect the market’s pulse, no inflated figures, no delays. For exchanges, MTM reduces counterparty risk because losses are settled daily, preventing defaults from piling up.
For individual traders, MTM provides clarity. You can track exactly where you stand at the end of each session instead of waiting until you square off. For regulators like SEBI, MTM ensures the entire ecosystem runs on fair pricing. In a market as dynamic as India’s, where volumes touch record highs, such real-time revaluation builds credibility and investor confidence.
Cons: Volatility, Unrealized Losses
On the downside, MTM magnifies volatility. Imagine holding a futures position during a sharp correction, your account immediately shows heavy losses, even if the market rebounds the next day. For companies, especially banks with large bond holdings, this creates big swings in quarterly earnings, even though the assets are long-term.
For retail traders, the challenge is margin pressure. MTM losses must be funded daily, which forces many to exit trades early. It can feel harsh, but that’s the price of keeping markets safe. In essence, MTM brings fairness at the cost of stability. It gives investors clarity but also exposes them to the raw speed of market moves.
Real-Life Examples of MTM Impact
In March 2020, when COVID-19 panic hit markets, equity indices fell by over 20% in a few weeks. F&O traders saw daily MTM losses wipe out margins. Many had to square off positions early.
At the same time, banks reported massive MTM losses on bond portfolios as yields spiked. SBI and HDFC Bank had to disclose these hits in their quarterly results.
On the flip side, when markets rebounded sharply in 2021, the same MTM rules credited traders and funds with big daily profits.
That’s the power of MTM; it cuts both ways.
MTM vs Historical Cost Accounting
Historical cost accounting values assets at the purchase price. MTM values them at today’s market price.
Example: You bought Infosys shares at ₹1,000. Historical cost accounting will keep it at ₹1,000 forever. MTM will revalue daily. If the stock is ₹1,500 today, the books reflect ₹1,500.
Historical cost gives stability but can mask risks. MTM gives accuracy but increases volatility.
In India, regulators prefer MTM for traded assets where prices are available daily.
Regulatory Guidelines Around MTM
SEBI and Stock Exchange Norms
SEBI mandates MTM for F&O and equity settlement. NSE Clearing collects daily MTM margins from brokers. Mutual funds must calculate NAVs with MTM valuations.
International Accounting Standards
Globally, MTM is covered under IFRS (International Financial Reporting Standards). India’s Ind-AS framework aligns closely with these, especially for financial instruments.
This keeps Indian companies compliant with both domestic and international norms.
Conclusion
Mark to Market lies at the heart of the Indian financial market. From traders in F&O, to mutual fund investors, to banks holding bonds, MTM ensures transparency, fairness, and risk control.
Yes, it brings volatility. Yes, it forces you to face losses immediately. But without MTM, the entire system would run blind.
In India’s fast-growing markets, where crores of rupees change hands every day, MTM is what keeps the game honest.
FAQs:
What does MTM mean in trading?
MTM, or Mark to Market, means revaluing open positions at the day’s closing price. It shows the real profit or loss on trades daily, instead of waiting until expiry.
Is MTM profit or loss real?
MTM shows unrealized gains or losses. They become real only when you close the position. However, MTM settlements require you to pay losses or receive profits every day, making the impact immediate.
Why is MTM important in futures contracts?
In futures, MTM ensures fair play. It prevents one party from defaulting by settling gains and losses daily. This daily settlement keeps market risks under control and protects all participants.
How is MTM margin calculated?
MTM margin is the difference between the entry price and the day’s closing price of the contract. If the closing price moves against your trade, you must pay the difference as margin.
Can MTM losses be adjusted or carried forward?
Yes. MTM losses are treated as business losses for tax purposes. You can adjust them against business income and carry them forward for up to eight years under Indian tax laws.