IT Services Sector Playbook
Indian IT services companies (TCS, Infosys, Wipro, HCLTech, Tech Mahindra) build and maintain technology systems for global enterprises. They're essentially...
How IT services companies work
Indian IT services companies (TCS, Infosys, Wipro, HCLTech, Tech Mahindra) build and maintain technology systems for global enterprises. They're essentially labour arbitrage + domain expertise businesses.
Revenue model
| Model | Description | % of Revenue |
|---|---|---|
| Time & Material (T&M) | Billed per person-hour. More hours = more revenue | 50–60% |
| Fixed-price | Agreed fee for a project deliverable | 30–40% |
| Managed Services | Recurring contracts for maintaining IT systems | 10–20% |
🗣️
"IT services = engineers ka export. India ka biggest service export after remittances."
The 6 metrics that define IT services
1. Revenue Growth (Constant Currency)
Always look at constant currency (CC) growth, not reported USD growth. Forex fluctuations can swing reported revenue ±5%.
| Growth Rate | Interpretation |
|---|---|
| > 12% CC | Above industry — strong deal wins |
| 8–12% CC | Industry rate — keeping pace |
| < 8% CC | Below industry — losing share or client issues |
2. EBIT Margin
EBIT Margin = (Operating Profit) / Revenue
| Company | EBIT Margin | Why |
|---|---|---|
| TCS | ~25% | Scale, best-in-class execution |
| Infosys | ~21% | Strong but investing in growth |
| Wipro | ~16% | Turnaround, lower operational efficiency |
| HCLTech | ~20% | Infrastructure services drag, improving |
Margin levers (how IT companies control margins)
Utilization = billable employees ÷ total employees. Moving from 80% to 84% alone can improve margins by 150-200 bps.
3. Deal Wins (TCV — Total Contract Value)
The leading indicator of future revenue. Large deals (> $50M) signed today become revenue over 3–5 years.
| Metric | What to track |
|---|---|
| Large deal TCV | Total value of $50M+ deals signed in the quarter |
| Deal pipeline | Qualitative commentary from management |
| Book-to-bill | New orders ÷ Revenue. > 1.0 = growing pipeline |
4. Attrition Rate
High attrition = rising costs (hiring, training) + client delivery risk.
| Attrition Level | Impact |
|---|---|
| < 12% | Healthy, manageable |
| 12–18% | Industry norm during good times |
| > 20% | Alarm — client delivery at risk, wage inflation |
5. Client Concentration
Top 5 Client % = (Revenue from top 5 clients) / (Total Revenue)
Lower is better. Losing a large client can significantly impact revenue.
| Company | Top 5 % | Top 10 % |
|---|---|---|
| TCS | ~15% | ~25% |
| Infosys | ~20% | ~30% |
| Wipro | ~18% | ~28% |
6. Revenue per Employee
Rev/Employee = (Total Revenue) / Headcount
Rising revenue/employee = improving productivity (automation, higher-value work, better pricing).
Red flags for IT stocks
IT services red flags
- CC growth below industry for 3+ quarters — structural client loss
- Margin guidance cut — usually means demand slowdown or competitive pricing pressure
- Attrition > 20% for 2+ quarters — talent crisis
- Large deal wins declining QoQ — pipeline drying up
- Client concentration increasing — risky dependency
- Subcontracting costs rising — dependency on expensive temp staff
- Management changes / CEO transition — strategy uncertainty
- BFSI vertical declining — banking & financial services is 25-30% of revenue for most
Valuing IT services
IT companies trade at PE 20–30x for leaders. What justifies this:
| Factor | How it affects valuation |
|---|---|
| High FCF generation (FCF/PAT > 90%) | Cash machines — minimal capex needed |
| 95%+ recurring/repeat revenue | Predictable earnings |
| India cost advantage | Structural margin floor |
| INR depreciation tailwind | Revenue in USD, costs in INR |
| Low debt / cash-rich balance sheets | Safety + dividend capacity |
PE framework for IT:
| PE Range | Company Profile |
|---|---|
| 25–35x | Category leaders (TCS, Infosys): consistent, high-quality |
| 18–25x | Second-tier (HCLTech, Wipro): improving but inconsistent |
| 12–18x | Mid-cap IT: higher growth but volatile |
Forex impact
1% INR depreciation against USD adds ~30-40 bps to EBIT margin for large IT companies. Always track ₹/$ movements alongside earnings.
Case study: TCS vs Infosys
| Metric | TCS | Infosys |
|---|---|---|
| Revenue ($B) | ~29 | ~19 |
| CC Growth | 4–5% | 3–4% |
| EBIT Margin | 25% | 21% |
| Attrition | 12% | 13% |
| FCF/PAT | 95% | 85% |
| Dividend Yield | ~1.5% | ~2.5% |
| PE | 28x | 25x |
TCS trades at a premium: larger scale, more consistent margins, lower attrition, better deal execution. Infosys offers slightly better value: higher dividend payout, Infosys BPM growth, and improving large deal momentum.
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IT services analysis exercise
- Compare TCS, Infosys, and one mid-cap IT (e.g., Persistent, Coforge)
- Check 3-year revenue CAGR (in reported currency and CC if available)
- Compare EBIT margins and FCF conversion
- Calculate revenue per employee over 3 years
- Assess which offers the best growth-adjusted valuation (PEG)
Summary
IT services investing is about growth consistency, margin resilience, and deal wins. Focus on CC growth, EBIT margin trends, and deal pipeline. These are cash machines — pay for quality and consistency, not heroic turnaround stories.
1. IT Services — Business Model & Revenue Streams
What you will learn
- The 3 revenue models (T&M, fixed-price, managed services)
- Labour arbitrage — the structural advantage of Indian IT
- Service line mix and its impact on margins
- Why IT services companies are cash machines
The core business: labour arbitrage + domain expertise
Indian IT services companies build, maintain, and transform technology systems for global enterprises. The business model is fundamentally:
Profit = (Billing Rate_(onshore/offshore) × Hours Billed) - (Employee Cost + Overhead)
The core moat: An engineer in Bangalore costs ₹15-25 lakh/year vs $120,000+ in the US. Even after adding management overhead, travel, and infrastructure — the cost advantage is 40-60%.
🗣️
"IT services = engineers ka export. India's biggest service export after remittances. Jab dollar aata hai aur cost rupees mein hota hai — that's the margin sweet spot."
Revenue model 1: Time & Material (T&M) — 50-60% of revenue
| Feature | Detail |
|---|---|
| How it works | Client pays per engineer per hour/day/month |
| Revenue driver | Number of engineers × billing rate × utilisation |
| Margin character | Predictable, tied to headcount |
| Risk | Client can reduce team size quickly |
| Ideal for | Application maintenance, support, staff augmentation |
Example: A US bank hires 200 TCS engineers at $40/hour offshore + 30 onshore at $100/hour. Monthly billing: (200 × $40 × 160 hrs) + (30 × $100 × 160 hrs) = $1.28M + $0.48M = $1.76M/month.
Revenue model 2: Fixed-Price — 30-40% of revenue
| Feature | Detail |
|---|---|
| How it works | Agreed fee for a defined deliverable (project or transformation) |
| Revenue driver | Project scope × agreed price |
| Margin character | HIGHER if done efficiently (fewer engineers needed) |
| Risk | Scope creep can erode margins; fixed price but variable effort |
| Ideal for | Digital transformation, new application development |
Margin upside: If a project is quoted at $5M and completed using $3M of resources → 40% margin. But if scope grows uncontrolled → margin erodes to 10% or negative.
Revenue model 3: Managed Services — 10-20% of revenue
| Feature | Detail |
|---|---|
| How it works | Multi-year contracts to manage client's IT infrastructure or applications |
| Revenue driver | Annual contract value (ACV), 3-5 year deals |
| Margin character | Improving over time (automation reduces cost) |
| Risk | Lower initial margins (transition costs), but highly sticky |
| Ideal for | Cloud operations, infrastructure management, BPO |
Key insight: Managed services have the highest recurring nature — once you manage a client's IT, switching costs are very high.
Service line mix and margins
| Service Line | % of Revenue (typical) | Margin Profile | Growth |
|---|---|---|---|
| Application development & maintenance | 30-40% | Moderate (legacy work, commoditising) | Flat to low |
| Digital transformation (cloud, data, AI) | 25-35% | Higher (emerging skills premium) | High |
| Infrastructure services | 15-20% | Lower (commodity, price pressure) | Flat |
| BPO / Business Process Services | 10-15% | Low (labour-intensive, thin margin) | Low |
| Consulting | 5-10% | Highest (but small scale) | Moderate |
Trend: All major IT companies are shifting mix from traditional (application maintenance, infra) to digital (cloud, AI, analytics). Digital commands 20-30% higher billing rates.
Why IT companies are cash machines
| Characteristic | Impact on Cash |
|---|---|
| Low capex (3-4% of revenue) | Almost no factories, minimal asset investment |
| Light balance sheet | Receivables + cash — that's most of the balance sheet |
| Dollar revenue, rupee costs | Currency translation boosts cash when INR weak |
| Negative working capital trend | Clients pay within 45-60 days, employees paid monthly |
| No inventory | Service business — nothing in warehouses |
FCF Conversion = (Free Cash Flow) / PAT × 100
| Company | FCF/PAT | Assessment |
|---|---|---|
| TCS | ~95% | Exceptional — almost all profit is cash |
| Infosys | ~85% | Strong |
| Wipro | ~80% | Good |
| HCLTech | ~85% | Strong (improved from infrastructure drag) |
This is why IT companies can return 70-90% of earnings as dividends + buybacks.
Client concentration — the hidden risk
Top 5 Client % = (Revenue from Top 5) / (Total Revenue) × 100
| Company | Top 5 % | Top 10 % | Risk |
|---|---|---|---|
| TCS | ~15% | ~25% | Low — highly diversified |
| Infosys | ~20% | ~30% | Moderate |
| Wipro | ~18% | ~28% | Moderate |
| Mid-cap IT | 30-45% | 50-60% | High — 1 client loss = material |
Losing a top-3 client for a mid-cap IT company can knock 10-15% off revenue. For TCS, losing the #1 client would be ~4% revenue impact.
✅ Checklist
- ○I understand the 3 revenue models (T&M, fixed-price, managed services)
- ○I know why Indian IT's labour arbitrage gives a 40-60% cost advantage
- ○I track service line mix shift (legacy → digital) as a growth/margin indicator
- ○I check FCF/PAT (should be > 80% for healthy IT companies)
Key takeaway
Indian IT services is a labour arbitrage business evolving into a digital transformation partner. The three revenue models (T&M, fixed-price, managed services) have different margin and risk profiles. The sector's key strength is extraordinary cash generation — FCF/PAT consistently above 80%. Track client concentration for risk and service line mix shift for growth quality.
2. IT Services — Growth Metrics
Constant Currency (CC) growth — the only true revenue growth for IT Deal wins (TCV) — the leading indicator of future revenue Client pyramid — how mining exi...
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3. IT Services — Margins & Productivity
The 5 margin levers IT companies use to manage profitability EBIT margin benchmarks by company tier Revenue per employee — the productivity measure Forex imp...
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4. IT Services — Red Flags & Risks
8 IT servicesspecific red flags Demand cycle indicators (when the downturn is coming) Management and governance risks unique to IT The BFSI vertical dependen...
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5. IT Services — Valuation Framework
PEbased valuation framework for IT services Why FCF matters more than earnings in IT Forex impact on valuation TCS vs Infosys case study — what justifies the...
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