MTF interest: m.Stock vs HDFC Sky under ₹25L

MTF (Margin Trading Facility) costs are back in focus on Reddit and trader groups because many investors are comparing “headline” rates with the actual slab that applies to retail-sized borrowings. The discussion is specifically about the “true cost” for MTF funding below ₹25 lakh, where promotional rates can be misleading if the broker uses tiered slabs.

Why MTF pricing is trending right now

Retail traders are repeatedly posting screenshots and slab tables to show that the rate you see in ads is often not the rate you pay. The most shared comparison is between m.Stock and HDFC Sky for small-to-mid MTF books. Users are highlighting that interest is charged on the funded amount for the number of days the position stays open. Several posts also convert annual rates into daily percentages to make the cost more visible. The daily rate framing is helping users estimate holding costs without waiting for a contract note. The conversation is not about stock selection, but about funding costs that quietly compound. Traders also point out that even a 2-3 percentage point difference can matter if positions are held for weeks. The takeaway from the thread is that retail MTF decisions are getting more rate-sensitive in 2026.

The 8.99% claim and where it actually applies

A key point in the posts is that m.Stock is frequently marketed as “starting from 8.99% p.a.” for its Pay Later (MTF) facility. However, users argue that the 8.99% tier is only available at very high borrowing levels, not typical retail MTF sizes. One widely circulated slab table states that 8.99% p.a. applies only for funding above ₹5 crore, with a daily rate around 0.0246%. In the same slab table, the next tier is 9.99% p.a. for borrowings above ₹25 lakh up to ₹5 crore, around 0.0274% daily. The lowest retail-relevant tier is shown as 14.99% p.a. up to ₹25 lakh, around 0.0411% daily. Separately, some social posts list a four-tier structure (including 11.99% for ₹1-5 lakh and 8.99% for ₹5-25 lakh) and another set of posts mention 6.99% for very large funding. The common theme across these versions is that the cheapest rates are tied to larger books, while smaller books pay the highest slab.

What m.Stock charges below ₹25 lakh

For the “under ₹25 lakh” question, the most repeated figure in the discussion is 14.99% per annum for borrowings up to ₹25 lakh. Posts also translate this to roughly 0.0411% interest per day. Traders say this is the slab most retail users end up paying, especially those borrowing ₹50,000 to ₹15 lakh. This is where the frustration comes from, because the advertised “starting” rate is not reachable for these funding sizes. In the same threads, users also share that m.Stock’s MTF is slab-based, so the rate can drop after crossing the relevant threshold. A separate comparison table shared on social media lists m.Stock’s per-day charges as slabbed, with the up-to-₹25 lakh slab costing around ₹41 per lakh per day. Users also mention that m.Stock interest is calculated on the gross funded amount for the days the position remains open. The practical implication shared on Reddit is that retail traders should assume the higher slab unless their borrowing clearly fits a lower tier.

HDFC Sky’s flat 12% and why simplicity matters

In contrast, HDFC Sky is described in posts as having a flat MTF interest rate of 12% per annum. Users convert this to about 1% monthly or around 0.0328% daily. The key appeal highlighted is that the rate does not change with funding size, whether the borrowed amount is ₹10,000 or ₹20 lakh. Traders say this reduces confusion and makes cost estimates easier before placing trades. Some users compare this “flat” model favorably against slab systems where the best rate applies only at very high funding levels. On per-lakh-per-day comparisons circulating online, a 12% annual rate is shown at roughly ₹33 per lakh per day. The discussion frames HDFC Sky as potentially cheaper for the sub-₹25 lakh bracket because 12% is below 14.99%. The posts do not claim HDFC Sky is the lowest in the market overall, only that it can beat m.Stock for small slabs. The recurring conclusion is that simplicity itself becomes a pricing advantage when traders are trying to manage holding costs.

Worked example: ₹5 lakh funded for 30 days

One viral Reddit calculation uses a ₹5 lakh MTF-funded position to compare monthly interest costs. At m.Stock’s 14.99% per annum slab, users estimate a daily interest of about ₹205.50. Over roughly a 30-day month, that totals around ₹6,165 in interest. At HDFC Sky’s 12% per annum flat rate, users estimate about ₹164 per day. Over a month, that becomes roughly ₹4,930. The difference in this example is more than ₹1,230 per month for the same funded amount. Traders use this example to argue that “headline” rates do not matter if your borrowing size keeps you in the top slab. The point is not that everyone borrows ₹5 lakh, but that the cost gap scales with borrowings. Here is the exact style of comparison that is being shared:

When m.Stock can beat HDFC Sky on interest

The same threads also acknowledge that m.Stock can become more economical once the borrowing crosses the slab thresholds. In the slab table widely circulated, m.Stock moves to 9.99% per annum for borrowings above ₹25 lakh up to ₹5 crore. If a trader actually qualifies for that tier, it undercuts HDFC Sky’s 12% rate on interest alone. Posts also repeat that the 8.99% tier is reserved for borrowings above ₹5 crore in one of the shared tables. Other social posts claim even lower figures for very large funding, but the discussion still treats those as relevant mainly for large operators. The practical interpretation in the comments is that m.Stock’s pricing is “lowest” only at higher funding levels. For most retail users who remain below ₹25 lakh, the shared math says the slab-based structure keeps them at 14.99%. In other words, m.Stock may be a better fit for traders who consistently maintain a larger MTF book, not for occasional small-ticket leverage. The key decision point, as framed by users, is the exact slab your gross funded value falls into, not the marketing headline.

Other costs traders are flagging: brokerage and plans

Beyond interest, traders also discuss m.Stock’s plan structure and per-order charges. Posts describe a Basic plan where equity delivery is free but multiple segments, including MTF, are charged at ₹20 per executed order. They also describe a “Zero Brokerage for Life” plan with a one-time ₹999 payment, after which certain segments including MTF drop to ₹5 per order. Another set of posts mentions a flat ₹10 brokerage per executed order for Pay Later (MTF) under a specific brokerage plan. Users emphasise that the fee applies per order, not per lot or quantity. Some commenters argue that focusing only on brokerage misses the larger cost driver, which is interest for multi-day holds. Others point out that brokerage can still matter for active traders placing many MTF orders. Reddit users also claim that m.Stock has no hidden charges beyond what is documented on its pricing page, while still urging people to read the slab table carefully. The thread’s overall framing is that the “true cost” is interest plus how frequently you transact.

Checklist before choosing an MTF provider

The most actionable advice in the discussion is to confirm the slab that applies to your expected borrowing range. Traders recommend converting the annual rate into a per-day figure to estimate holding costs. They also suggest running a simple 30-day cost estimate like the ₹5 lakh example before committing to a broker. Another repeated point is to verify whether the interest is charged on the gross funded amount across positions, which some m.Stock posts explicitly state. Users also advise checking whether your broker has tiered rates, because a single headline number may not reflect your slab. On the operational side, they recommend comparing per-order brokerage if you plan to place many MTF orders. Some users also mention that m.Stock’s MTF is available for a large list of approved stocks with funding up to 80%, but the rate still depends on slab and holding period. The final decision framework shared in comments is simple: under ₹25 lakh funding, a flat 12% can be cheaper than 14.99%, while higher slabs can flip the comparison.