ConverterHub

In-House vs Outsource Calculator

See when building beats outsourcing.

Result

$90,000.00
-$30,000.00
$60,000.00

How it is calculated

The tool compares one up-front build cost with a monthly vendor fee over a chosen period. It computes outsource total = outsource_monthly × months and difference = build_cost − outsource total. A positive difference means building costs more than outsourcing over that period, and a negative difference means building is cheaper. All three inputs are non-negative: build cost and monthly fee in dollars, months as a number (0 is allowed and gives an outsource total of zero). The result shows only these two totals. Running costs of the in-house option, such as salaries, maintenance or hosting, are not modelled, so include them in the build cost if you want them counted. The break-even month is build cost ÷ monthly fee.

Worked example

Building a tool in-house is quoted at 60,000, while a vendor charges 2,500 a month and you plan a 36-month horizon. Outsourcing costs 2,500 × 36 = 90,000 in total. The difference is 60,000 − 90,000 = −30,000, so building is cheaper by 30,000. The tool prints an outsource total of $90,000.00 and a difference of -$30,000.00. The break-even point is 60,000 ÷ 2,500 = 24 months.

Try this example →

Common mistakes

  • Reading the sign of the difference backwards. It is build minus outsource, so a negative number is good for building and a positive number favours outsourcing.
  • Entering only the build cost and forgetting the in-house running costs. The tool treats the build as a single one-off payment, so ongoing salaries or upkeep must be added into it.
  • Entering a yearly vendor fee in the monthly field. The months input multiplies it, which overstates the outsourcing total twelve-fold.
  • Choosing too short a horizon. Over 12 months the same quote shows outsourcing ahead by 30,000, over 36 months building wins; the answer depends on how long you will actually need the capability.
  • Ignoring discounting and fee increases. The tool multiplies a flat fee by months, with no inflation or interest.

About this calculator

The make-or-buy decision — building a capability in-house versus outsourcing it to a vendor — usually comes down to a cost-crossover point. In-house work typically carries higher fixed costs (salaries, equipment, management overhead) but a lower cost per unit of output once running; outsourcing usually has little to no fixed cost but a higher, usage-based price per unit. Below a certain volume, outsourcing wins; above it, building in-house does.

This calculator compares a one-time in-house build cost with a monthly outsourcing fee over the number of months you choose. It shows the total outsourcing cost and the difference from the build cost, so you can see which option is cheaper over that period; it does not model in-house running costs, so to find a crossover point, try different month counts. Operations managers, startup founders, and procurement teams use this kind of comparison when deciding whether to hire and build a team for a function like manufacturing, IT support, or customer service, or to contract it out instead.

Was this helpful?

You can pick up to 3 reactions.

Comments

  • Be the first to comment.

Popular calculators

Loan Calculator

Monthly payment, total interest and full amortization schedule.

Percentage Calculator

Percent change, percent of, and ratio calculations.

Discount Calculator

Calculate final price, savings, and discount amount.

BMI Calculator

Body mass index from height and weight (metric or imperial).

Age Calculator

Compute your exact age in years, months and days from a birth date.

Compound Interest Calculator

Calculate the final amount and interest earned with compounding.

All Calculators