IRB margin rises to 56.19% despite a 10.34% YoY revenue drop
Expenses fell 26.68% year on year against the revenue decline, while other income contributed 12.3% of pre-tax profit.
Filed 20 May 2026, 14:14 IST · IRB Infrastructure Developers Ltd (IRB)
Key takeaways
- Consolidated operating margin expanded 9.76 percentage points year on year to 56.19% even as revenue fell 10.34%.
- Net profit rose 37.98% year on year, helped by a 6.46-percentage-point fall in the tax rate and an 11.34% decline in interest expense.
- The stock gained 4.55% on the filing day, versus six declines in its eight recent result reactions and a 2.76% median absolute move.
Price around the results
Lower revenue was offset by sharper cost control
Consolidated revenue declined 10.34% year on year, but expenses fell 26.68%, allowing operating profit to rise 8.51%. Sequentially, revenue increased 2.98% while expenses declined 0.53%, lifting operating margin by 1.55 percentage points. Interest expense also fell 11.34% year on year and 7.02% quarter on quarter.
Tax and other income supported reported profit growth
Net profit increased 37.98% year on year and 40.55% quarter on quarter, with the tax rate falling 6.46 percentage points year on year and 1.59 percentage points sequentially. Other income accounted for 12.3% of pre-tax profit, so the earnings increase was not entirely operating-led. Depreciation rose 12.22% year on year and 11.02% sequentially, partly offsetting the lower interest burden.
Margin expansion continued into the fourth quarter
Operating margin has risen for four consecutive quarters, from 45.35% in Q1FY26 to 56.19% in Q4FY26. IRB's margin was 40.53 percentage points above the 15.66% median for 71 reported Industrials peers, placing it above all peers in that comparison. The year-on-year margin improvement came despite lower revenue because costs contracted much faster.
The market reaction was larger than IRB's usual result-day move
The stock rose 4.55% on the filing day and was up 13.01% after one trading day, with volume at 5.54 times the reference level. This was an unusual direction for the stock: only two of its last eight result reactions were positive, while the median absolute move was 2.76%. A corporate-action overlap was also recorded alongside the reaction.
Q4FY26 at a glance
Consolidated figures as filed with NSE — cross-checked against an independent source.
| Line item | Q4FY26 | Q3FY26 | QoQ | YoY |
|---|---|---|---|---|
| Revenue | ₹1,927 cr | ₹1,871 cr | +2.98% | -10.34% |
| Other income | ₹50 cr | ₹-2 cr | — | -27.30% |
| Expenses | ₹844 cr | ₹849 cr | -0.53% | -26.68% |
| Operating profit | ₹1,083 cr | ₹1,022 cr | +5.90% | +8.51% |
| Operating margin (%) | 56.19% | 54.64% | — | — |
| Interest | ₹406 cr | ₹436 cr | -7.02% | -11.34% |
| Depreciation | ₹321 cr | ₹289 cr | +11.02% | +12.22% |
| Profit before tax | ₹406 cr | ₹295 cr | +37.49% | +25.76% |
| Tax | ₹109 cr | ₹84 cr | +29.84% | +1.44% |
| Net profit | ₹296 cr | ₹211 cr | +40.55% | +37.98% |
| EPS (₹) | ₹0.25 | ₹0.35 | -28.57% | -28.57% |
Operating margin of 56.19% compares with a Industrials sector median of 15.66% across 71 peers that have reported Q4FY26.
How the stock reacted
| Window | Stock | vs NIFTY |
|---|---|---|
| Results day | +4.55% | +4.38% |
| Next session | +13.01% | — |
| 5 sessions | +7.32% | +6.10% |
| 15 sessions | +0.00% | — |
| 30 sessions | +5.39% | — |
Volume on the results session was 5.54× its 20-day average.
What to watch
- Whether consolidated operating margin holds above 56.19%.
- Whether the tax rate remains near or below 26.96%.
- Whether other income stays below 12.3% of pre-tax profit.