Introduction

Buying a packaging machine is one of the larger investments a manufacturer makes. Before signing a purchase order, owners and finance teams want to know one thing: will it pay for itself, and how quickly?

The answer depends on more than the machine’s price. A machine saves money in several ways, such as reducing labour, cutting product giveaway, lowering waste and increasing output, and it adds costs such as electricity, maintenance, spare parts and training. Many businesses underestimate the savings because they focus only on labour, or underestimate the costs because they ignore running expenses.

This article explains a simple, practical method to estimate the payback period and return on investment (ROI) of a packaging machine. It uses an illustrative example with round numbers, which you can replace with your own figures.

Key terms

• Investment: the total cost of buying and installing the machine.
• Annual savings: money saved each year compared with the current method.
• Annual extra profit: additional profit from increased sales enabled by the machine.
• Running costs: extra costs of operating the machine.
• Net annual benefit: savings plus extra profit, minus running costs.
• Payback period: investment divided by net annual benefit.
• ROI: net annual benefit divided by investment, expressed as a percentage.

Step 1: Calculate the total investment

Include every cost of getting the machine into production:

• Machine price.
• Shipping, insurance and import costs.
• Customs duties and taxes, where applicable.
• Installation and commissioning.
• Training.
• Factory preparation: electrical work, compressed air, platforms and floor changes.
• Change parts for different products or pack sizes.
• Initial spare parts.
• Trial materials.

It is easy to forget the costs beyond the machine price, but together they can be significant.

Step 2: Measure your current costs

Before estimating savings, record how your packing works today:

• Number of people packing per shift and their total cost, including wages, benefits, overtime and supervision.
• Packs produced per day.
• Average overfill per pack.
• Percentage of packs rejected or reworked.
• Packaging material wasted.
• Lost sales or delayed orders due to limited capacity.

Even a week of careful measurement provides a much better basis than guesses, and it often reveals savings opportunities nobody had noticed before.

Step 3: Estimate labour savings

Compare the labour needed for the same output with the new machine. For example, if eight people pack by hand and a machine line needs three operators, the labour saving is five people’s cost per shift.

Remember that staff may be redeployed rather than released. If they move to other productive work, the saving is still real, because the business avoids hiring additional people for that work.

Step 4: Estimate giveaway savings

Product giveaway is the extra product packed above the declared weight. Manual packers often overfill to avoid underweight packs. Accurate weighers and fillers reduce this.

To calculate:

1. Measure the average overfill per pack today.
2. Estimate the average overfill with the machine, based on its accuracy.
3. Multiply the difference by the number of packs per year.
4. Multiply by the cost of the product per gram or kilogram.

For valuable products such as spices, coffee, nuts and dairy powders, giveaway savings can be substantial, sometimes larger than labour savings.

Step 5: Estimate waste reduction

Machines can reduce waste through:

• Fewer poorly sealed packs.
• Less damaged product.
• Better film usage.
• Fewer rejected packs from customers.

Estimate the annual cost of waste today and the expected reduction.

Step 6: Estimate extra profit from increased output

If demand exceeds current packing capacity, a machine can unlock extra sales. Estimate:

• Additional packs per year the machine allows you to sell.
• Profit margin per pack, after raw materials and other variable costs.

Only include sales you are confident of achieving, such as confirmed orders, repeat customer forecasts or clear demand that you currently cannot meet.

Step 7: Estimate running costs

Add the costs of operating the machine:

• Electricity.
• Compressed air.
• Gases, for MAP machines.
• Maintenance and spare parts.
• Service contracts.
• Any change in packaging material costs, for example moving from manual bags to roll film, which may reduce costs, or to premium pouches, which may increase them.

Step 8: Calculate net annual benefit, payback and ROI

Net annual benefit = labour savings + giveaway savings + waste savings + extra profit − running costs.

Payback period (years) = total investment ÷ net annual benefit.

ROI (%) = net annual benefit ÷ total investment × 100.

Illustrative example

The following example is illustrative, uses round numbers and does not describe a real client or real prices. Replace the figures with your own.

A spice producer packs 100 g pouches by hand.

Total investment: LKR 12,000,000 for an auger filler, VFFS machine, check weigher, installation, training and spare parts.

Labour savings: five fewer people needed for packing. At LKR 900,000 per person per year (including benefits), the saving is LKR 4,500,000 per year.

Giveaway savings: average overfill falls from 4 g to 1 g per pack. With 1,000,000 packs per year, that saves 3,000 kg of spice. At LKR 1,500 per kg, the saving is LKR 4,500,000 per year.

Waste savings: fewer rejected packs and less film waste save LKR 500,000 per year.

Extra profit: increased capacity allows 200,000 extra packs per year at LKR 10 profit per pack: LKR 2,000,000.

Running costs: electricity, compressed air, maintenance and spare parts: LKR 1,500,000 per year.

Net annual benefit: 4,500,000 + 4,500,000 + 500,000 + 2,000,000 − 1,500,000 = LKR 10,000,000.

Payback: 12,000,000 ÷ 10,000,000 = 1.2 years.

ROI: 10,000,000 ÷ 12,000,000 × 100 = about 83% per year.

In this example, giveaway savings are as important as labour savings, which shows why accurate weighing matters for valuable products.

Realistic output assumptions

One of the most common errors in ROI calculations is assuming the machine runs at its maximum rated speed all day. In practice, output depends on:

• Actual running speed: often below the maximum, depending on product, pack size and materials.
• Changeovers: time spent switching products, sizes or film.
• Cleaning: daily and weekly cleaning time.
• Breaks and shift changes.
• Material replenishment: loading film rolls, pouches or cartons.
• Minor stoppages: jams, alarms and adjustments.

A practical approach is to calculate effective output using a realistic efficiency factor. For example, if a machine runs at 60 packs per minute but is productive for 75% of an eight-hour shift, effective output is 60 × 60 × 8 × 0.75 = 21,600 packs per shift. Using this figure gives a much more reliable payback estimate.

Comparing two options

ROI calculations are most useful when comparing options. For example, a producer might compare:

• Option A: a semi-automatic auger filler and band sealer with a lower investment and moderate savings.
• Option B: a fully automatic VFFS line with a higher investment and larger savings.

Calculate the payback and ROI for each, using the same assumptions. Option A might pay back faster but deliver smaller annual benefits, while Option B might take longer to pay back but deliver much greater benefits over five years. The right choice depends on cash flow, growth plans and risk appetite.

A simple five-year view helps: add up the net benefits over five years and subtract the investment. This shows the total value each option creates over a realistic machine life.

Total cost of ownership

Beyond the initial purchase, consider the total cost of ownership over the machine’s life:

• Purchase and installation.
• Energy and utilities.
• Maintenance labour.
• Spare and wear parts.
• Downtime costs.
• Upgrades and change parts for new products.
• Residual or resale value at the end.

A cheaper machine with frequent breakdowns and expensive parts can cost more over five years than a more robust machine with a higher purchase price. Ask suppliers about expected wear part life, recommended spares and service support when comparing quotations.

Presenting the investment case

When presenting the investment to owners, directors or a bank, include:

1. The problem: current capacity, costs, giveaway and customer demands.
2. The solution: the proposed machine or line, with key specifications.
3. The numbers: investment, annual benefits, payback and ROI under different scenarios.
4. The risks: and how they will be managed, such as trials, training and spare parts.
5. The timeline: from order to full production.
6. The wider benefits: quality, safety, customer requirements and growth.

A clear, well-supported case makes approval easier and sets expectations for measuring results.

Factors that are harder to measure

Some benefits are difficult to put in numbers but still matter:

• Consistent pack appearance: improves brand image and retailer confidence.
• Food safety: less handling and better inspection reduce risks.
• Customer requirements: some supermarkets and export buyers require automated packing standards.
• Employee wellbeing: less repetitive work and fewer injuries.
• Flexibility: the ability to accept larger orders quickly.
• Data: production records support planning and audits.

These benefits strengthen the case for investment even when the numerical payback is similar between options.

A simple ROI worksheet

You can build a simple worksheet with these lines, filling in your own figures:

Investment

• Machine price.
• Shipping, import and clearance.
• Installation, training and factory preparation.
• Change parts and initial spares.
• Total investment.

Annual benefits

• Labour savings.
• Giveaway savings.
• Waste savings.
• Extra profit from additional sales.
• Total annual benefits.

Annual running costs

• Utilities.
• Maintenance and spare parts.
• Service contracts.
• Change in packaging material costs.
• Total running costs.

Results

• Net annual benefit.
• Payback period.
• ROI.
• Five-year net value.

Keeping the worksheet simple makes it easy to update as quotations, trial results and sales forecasts become clearer, and it gives everyone involved a shared view of the investment.

Sensitivity analysis

Estimates are never perfect, so test different scenarios:

• Conservative: lower savings and higher costs.
• Expected: your best estimate.
• Optimistic: higher savings, for example if sales grow faster.

If the investment still pays back within an acceptable time in the conservative scenario, the decision is robust.

ROI for different machine types

The main sources of savings vary by machine:

• Multihead weighers and auger fillers: the biggest benefit is usually reduced giveaway, especially for valuable products, along with labour savings.
• VFFS and pouch machines: savings come from labour, faster output and, for VFFS, lower packaging cost per pack compared with premade pouches.
• Flow wrappers: labour savings and output gains are typically the main benefits, with better pack consistency.
• Cartoners: labour savings in boxing, often significant for high-volume products, plus a more professional finished pack.
• MAP tray sealers and vacuum packers: benefits include longer shelf life, wider distribution, fewer returns and new customers, which may be larger than labour savings.
• Check weighers and metal detectors: benefits are mainly risk reduction, compliance and protection against costly complaints, recalls or rejected consignments.

Understanding where the value comes from for each machine helps focus measurement on the factors that matter most.

The cost of doing nothing

ROI calculations should also consider what happens if the business does not invest. Possible costs include:

• Turning down orders when capacity is full.
• Losing supermarket listings because of inconsistent weights or appearance.
• Rising labour costs and difficulty finding staff.
• Continued product giveaway.
• Competitors winning customers with better-packed products.

Including the cost of doing nothing gives a fuller picture of the decision, especially for growing businesses facing strong demand.

Financing options

Packaging machines can be financed in several ways:

• Cash from business reserves.
• Bank loans.
• Leasing.
• Government or development programmes for SMEs and exporters, where available.

Financing costs should be included in the analysis, as interest affects the true return.

Common mistakes in ROI calculations

• Ignoring installation, training and factory preparation costs.
• Counting labour savings when staff will not actually be redeployed or reduced.
• Ignoring giveaway savings, which are often large.
• Assuming the machine will always run at maximum speed.
• Forgetting changeover and cleaning time.
• Ignoring running costs and spare parts.
• Including extra sales that are not realistic.

Reducing risk in the investment

Several steps reduce the risk that a machine will not deliver the expected return:

• Trials: test the machine with your product and packaging before purchase, and record speed, accuracy and seal quality.
• Clear specifications: agree in writing the expected speed, accuracy and pack formats.
• Training: ensure operators and maintenance staff are properly trained.
• Spare parts: keep critical wear parts on site to avoid long stoppages.
• Service support: confirm response times and the availability of technicians.
• Phased implementation: start with one product, stabilise performance, then add others.
• Packaging readiness: make sure films, pouches and cartons are designed and printed to run well on the machine.

Each of these steps protects the expected savings and helps the machine reach full performance sooner after installation.

Measuring results after installation

After the machine is installed, compare actual results with the estimates:

• Output per shift.
• Labour hours.
• Average overfill.
• Reject rates.
• Downtime and its causes.
• Running costs.

Regular reviews help optimise the machine and provide evidence for future investments. A monthly review for the first six months is especially useful, as most gains come from fine-tuning settings, improving changeovers and resolving small recurring stoppages. After that, a quarterly review is usually enough. Sharing the results with operators also builds ownership: when the team can see how output, giveaway and downtime are improving, they are more motivated to keep the line running well.

When the numbers do not add up

Sometimes the calculation shows that a machine will not pay back within an acceptable time. This is useful information. Options include:

• Choosing a smaller or semi-automatic machine.
• Automating only the highest-volume product.
• Delaying the investment until volumes grow.
• Improving manual packing first, for example with better scales and sealers.
• Combining products from several lines onto one machine to increase utilisation.

A careful calculation that leads to a different decision is just as valuable as one that confirms the investment, because it protects cash for the projects that will deliver the strongest returns.

How Dsigngo Group can help

Dsigngo Group helps manufacturers estimate the payback of packaging machines. We review current packing methods, recommend suitable machines, provide realistic speed and accuracy information and help build a simple investment case.

Frequently asked questions

What is a good payback period for a packaging machine?

Many businesses aim for payback within one to three years, but acceptable periods depend on the business, financing and strategic goals.

Should we include giveaway savings?

Yes. For valuable products, giveaway savings can be among the largest benefits.

What if our sales are seasonal?

Use realistic annual volumes, including quiet periods, and consider whether the machine can pack other products during low seasons.

Can a semi-automatic machine have a better ROI than an automatic one?

Yes, especially for smaller volumes. Compare both options with the same method.

Do you help with the calculation?

Yes. We can help gather the information and estimate payback.

Conclusion

Calculating the return on investment of a packaging machine involves more than comparing the price with labour savings. By including all investment costs, labour savings, giveaway reduction, waste reduction, extra profit and running costs, manufacturers can make confident, evidence-based decisions.

Want help estimating the payback of a packaging machine? Talk to Dsigngo Group.

Request an ROI Review

Sources

• Dsigngo Group machinery advisory experience (illustrative example with round numbers).