How do you calculate insourcing payback period?

Subtract the added annual in-house support cost from the gross annual savings to get net annual savings, then divide the investment by that figure. With a $25,000 investment, $18,000 savings, and $2,500 support cost, net savings are $15,500/yr and payback is 25000 / 15500 = 1.61 years.

What is a good insourcing payback period?

Most plants want under 2 years for discretionary insourcing and under 3 years for strategic capacity moves. The 1.61-year result in the worked example is firmly in attractive territory.

Why subtract support cost from savings?

Bringing work in-house adds recurring cost — operators, maintenance, utilities, indirect labor. Only the net of gross savings minus those added costs actually pays back the investment, so using gross savings alone overstates the case.

What is the five-year value of insourcing?

Multiply net annual savings by five and subtract the investment. Here that is $15,500 x 5 - $25,000 = $52,500 of net value over five years, assuming volumes hold.

Insourcing payback vs. NPV — which should I use?

Payback is a fast screen that ignores discounting; NPV accounts for the time value of money and the full asset life. Use payback to triage candidates, then run NPV on the survivors before signing a capital request.

What happens to payback if volume drops?

Savings scale with volume, so a 20% volume drop cuts gross savings roughly 20% while support cost stays sticky — net savings fall faster than that and payback lengthens. Always stress-test the result against your low-demand scenario.

Make-Buy, Outsourcing & Network Design calculator

Insourcing Payback Calculator

Insourcing payback period tells you how many years it takes for the savings from making a part in-house to repay the capital you spent on machines, tooling, and setup. Operations managers and plant controllers run it when deciding whether to pull a job back from a contract shop. It cuts through gut-feel reshoring arguments by netting recurring support costs against gross savings before dividing into the up-front investment. A short payback (under two years) usually clears the bar for a make-vs-buy switch; a long one signals the volume or margin isn't there yet.

What this calculator does

Estimate insourcing payback for make-buy, outsourcing and network design using production-ready inputs so teams can screen a capital project before a detailed business case.
Use it when insourcing payback in make-buy, outsourcing and network design is being put in front of a capital committee and the savings story needs to hold up.
It divides the up-front insourcing investment by the net annual savings (gross savings minus added in-house support cost) to return a payback period in years.

Formula used

Net annual insourcing payback savings = annual insourcing payback savings - annual insourcing payback support cost
Insourcing payback payback period = insourcing payback investment ÷ net annual savings

Inputs explained

Equipment and setup investment to bring work in-house:
Annual savings vs. current outsourced spend:
Annual added in-house support and labor cost:

How to use the result

Use it when evaluating whether to reshore or in-source a part currently bought from a contract manufacturer, before committing capital to equipment and qualification.
It assumes savings and support costs stay flat every year and ignores the time value of money, ramp-up scrap, and demand changes — use NPV or IRR for capital decisions above a few hundred thousand dollars.

Current U.S. benchmarks

Sourcing currencies as of 2026-07-02 (Federal Reserve H.10): 6.7886 CNY and 17.4524 MXN per USD. Landed-cost comparisons move with these daily rates.
U.S. iron and steel imports ran $2.1B in May 2026 (Census International Trade). The U.S. ran a trade deficit of $0.4B in the category that month. Import volumes are the pressure gauge behind tariff and reshoring decisions.

Common questions

How do you calculate insourcing payback period? Subtract the added annual in-house support cost from the gross annual savings to get net annual savings, then divide the investment by that figure. With a $25,000 investment, $18,000 savings, and $2,500 support cost, net savings are $15,500/yr and payback is 25000 / 15500 = 1.61 years.
What is a good insourcing payback period? Most plants want under 2 years for discretionary insourcing and under 3 years for strategic capacity moves. The 1.61-year result in the worked example is firmly in attractive territory.
Why subtract support cost from savings? Bringing work in-house adds recurring cost — operators, maintenance, utilities, indirect labor. Only the net of gross savings minus those added costs actually pays back the investment, so using gross savings alone overstates the case.
What is the five-year value of insourcing? Multiply net annual savings by five and subtract the investment. Here that is $15,500 x 5 - $25,000 = $52,500 of net value over five years, assuming volumes hold.
Insourcing payback vs. NPV — which should I use? Payback is a fast screen that ignores discounting; NPV accounts for the time value of money and the full asset life. Use payback to triage candidates, then run NPV on the survivors before signing a capital request.

Last reviewed 2026-05-12.