Operations Strategy

Make-to-Order vs Make-to-Stock for Indian Manufacturers: Choosing the Right Strategy

Written by Jainam Shah (Founder, ERPDrive). Reviewed by Anand Krishnan (Implementation Lead, Manufacturing Operations). Published 19 May 2026. We update this article when GST rules, compliance thresholds or IATF standards change.

Published 19 May 2026 10 min read Jainam Shah

What MTO and MTS actually mean

Make-to-Stock (MTS) means you produce against forecast and hold finished goods inventory in anticipation of customer orders. The customer order is fulfilled from stock; the order itself does not trigger production. Examples: FMCG, standard fasteners, electronic components in distribution.

Make-to-Order (MTO) means you produce only after receiving a customer order. The order triggers material procurement (if not stocked) and production. There is no finished-goods inventory of that specific configuration. Examples: custom machinery, made-to-spec auto components, CNC job shops.

Two intermediate categories exist:

  • Assemble-to-Order (ATO): components are stocked but final assembly happens after the order. Computer assembly, modular furniture, customisable industrial products.
  • Engineer-to-Order (ETO): design itself starts after the order. Capital equipment, large infrastructure, one-off industrial machinery.

MTS: when it works

MTS works well when:

  • Demand is forecastable with reasonable accuracy (typically less than 30% mean absolute percentage error).
  • Product variety is low - the number of SKUs you carry can be stored without ballooning inventory.
  • Lead time tolerance is short - customers want immediate delivery (next day, same day).
  • Production economics favour batch size - large batches are much cheaper than small ones due to setup time.
  • Shelf life is reasonable - the product does not become obsolete quickly.

MTO: when it works

MTO works well when:

  • Demand is unpredictable or order-driven (project-based businesses).
  • Product variety is high - too many SKUs to stock economically.
  • Customisation is expected - customers specify dimensions, material, finishes that vary order to order.
  • Customer lead-time tolerance is meaningful - customer will wait 5-30 days.
  • Material cost is high relative to labour - holding inventory ties up significant capital.
  • Obsolescence risk is high - product design changes frequently.

The hybrid: most Indian factories actually need both

After auditing 60+ Indian factories, the reality is: pure MTS and pure MTO are both rare. Most factories operate a hybrid where some part numbers are MTS and others are MTO.

The simplest hybrid rule: 80/20 by volume. Run ABC analysis on annual unit volume. Class A items (top 20% by volume, typically 70-80% of annual production) go MTS. Class B and C go MTO.

Worked example for Vortex Valves: of 87 active SKUs, the top 8 by volume make up 73% of production hours. Those 8 run MTS with 2-week reorder cycles and 1-week safety stock. The remaining 79 SKUs are MTO with confirmed order required before any cutting starts. The hybrid policy reduced their total finished-goods inventory by 38% while improving delivery lead time on Class A by 60%.

Inventory and working capital impact

MTS holds inventory at three layers: raw material, WIP, and finished goods. MTO holds inventory at one layer: raw material (typically only commodity items kept on hand).

Typical inventory-to-revenue ratios:

  • Pure MTS factory: 22-28% of annual revenue tied up in inventory.
  • Pure MTO factory: 8-14% of annual revenue tied up in inventory.
  • Hybrid factory (80/20 split): 14-19% of annual revenue.

Lead time and delivery performance

Customer-promised lead time differs dramatically:

  • MTS: dispatch within 1-3 days from order (sometimes same day).
  • ATO: 3-7 days typical.
  • MTO: 7-30 days typical, depending on routing complexity.
  • ETO: 30-180+ days.

Forecast accuracy: the bedrock of MTS

MTS only works if your forecast is reasonably accurate. The key metric is MAPE (Mean Absolute Percentage Error):

MAPE = sum(|forecast - actual| / actual) / N

Practical interpretation:

  • MAPE less than 20%: excellent. MTS works well at item level.
  • MAPE 20-30%: good. MTS works at category level; some items need safety stock buffer.
  • MAPE 30-50%: mediocre. MTS only at high-level aggregation; item-level MTO is safer.
  • MAPE above 50%: bad. Pure MTO or rolling forecast with frequent revision.

How ERP supports both strategies

A purpose-built manufacturing ERP supports both MTS and MTO on a per-item basis. ERPDrive's configuration:

  • Per-item strategy flag: set MTS or MTO at item-master level.
  • MTS items: safety stock, reorder point, reorder quantity set; MRP triggers production when stock crosses reorder.
  • MTO items: no safety stock; production order is generated against a confirmed sales order.
  • ATO items: components stocked as MTS; assembly triggered against sales order.
  • Hybrid plant: same factory, same ERP, two policies running side by side. Forecasts feed MTS items; sales orders feed MTO items.

Frequently Asked Questions

What is the difference between Make-to-Order and Make-to-Stock?

Make-to-Stock (MTS) produces against forecast and holds finished-goods inventory; customer order is fulfilled from stock. Make-to-Order (MTO) produces only after receiving a customer order, with no anticipatory finished-goods inventory. Two intermediates exist: Assemble-to-Order (ATO) keeps components stocked but assembles after order; Engineer-to-Order (ETO) starts design after order.

When should I use MTS in my factory?

MTS works when demand is forecastable (MAPE less than 30%), product variety is low, customers expect immediate delivery (1-3 days), batch-size economics favour larger runs, and shelf life is reasonable. Common Indian sectors: standard fasteners, electrical commodities, FMCG, building materials, automotive standard parts at distribution level.

When should I use MTO in my factory?

MTO works when demand is unpredictable or project-driven, product variety is high, customisation is expected, customers tolerate 5-30 day lead time, material cost is high, or obsolescence risk is significant. Common Indian sectors: CNC job shops, custom machinery, capital equipment, custom sheet-metal fabrication, custom electronics, engineering-to-order industrial products.

Can a factory use both MTS and MTO at the same time?

Yes, and most Indian factories actually should. The typical hybrid is 80/20 by volume: top 20% of SKUs (by annual unit volume, typically 70-80% of production hours) on MTS with safety stock; remaining 80% of SKUs on MTO triggered by confirmed sales orders. Vortex Valves runs 8 top SKUs MTS and 79 SKUs MTO and reduced finished-goods inventory 38% while improving lead times.

How does MTO vs MTS affect inventory levels?

Pure MTS factories typically tie up 22-28% of annual revenue in inventory (raw material + WIP + finished goods). Pure MTO factories tie up 8-14% (mostly raw material only). Hybrid factories with 80/20 split tie up 14-19%. The choice between MTS and MTO is partly a choice about how much working capital is locked in inventory vs available for other uses.

What forecast accuracy is needed for MTS to work?

MAPE (Mean Absolute Percentage Error) below 30% is the practical threshold for item-level MTS. MAPE below 20% is excellent. MAPE 30-50% means MTS only works at category aggregation, with item-level MTO safer. Above 50% MAPE, pure MTO or rolling-forecast MTO is the right policy. Indian SMEs anecdotally run MAPE in the 30-60% range, which argues for hybrid rather than blanket MTS.

What is Engineer-to-Order (ETO)?

ETO is when the design itself starts after the customer order is placed. The customer specifies requirements; engineering produces drawings; manufacturing then produces against those drawings. Typical lead times are 30-180+ days. Common sectors: capital equipment, industrial heat exchangers, custom infrastructure, one-off machinery. ETO requires the strongest project management and ERP support for engineering change tracking.