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Buy vs Lease Calculator

Compare buying versus leasing with user-entered purchase price, residual value, maintenance, lease payments, and fees.

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Inputs

$
$/year
$
$/mo

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Results

Buy Savings vs Lease
Buy Total Cost$70,000.00
Lease Total Cost$89,400.00
Lower-Cost OptionBuy

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Assumptions

  • All prices, discounts, costs, volumes, terms, and rates are user-entered assumptions.
  • Calculations are deterministic and run locally in the browser without uploading procurement data.
  • Results are planning estimates and do not replace legal, accounting, tax, security, operational, or procurement review.

Sensitivity preview

Purchase Price -10%: Buy Savings vs Lease $26,900.00

Purchase Price Current: Buy Savings vs Lease $19,400.00

Purchase Price +10%: Buy Savings vs Lease $11,900.00

Formula: Buy total cost = purchase price + annual maintenance cost * years - residual value. Lease total cost = monthly lease payment * 12 * years + lease fees. Buy savings vs lease = lease total cost - buy total cost.

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About this Buy vs Lease Calculator

Buying and leasing can shift costs between upfront cash, recurring payments, maintenance, residual value, and contract fees.

Who this calculator is for

  • Procurement, finance, operations, and vendor-management teams comparing sourcing options.
  • Small business owners checking supplier quotes before approving a spend decision.
  • Analysts preparing a transparent savings estimate from user-entered contract, discount, and cost assumptions.

When to use it

  • Compare a current vendor baseline against a proposed sourcing option.
  • Separate gross savings from transition, implementation, maintenance, or administration costs.
  • Document the assumptions behind a negotiation, renewal, consolidation, lease, or build-versus-buy recommendation.

How to use this calculator

  1. Enter only prices, discounts, quantities, terms, and costs you can verify from your quotes, contracts, invoices, or planning model.
  2. Adjust one assumption at a time to compare conservative, expected, and optimistic cases.
  3. Use the primary output as a planning estimate and review the supporting outputs before making a decision.

Key assumptions

  • All prices, discounts, costs, volumes, terms, and rates are user-entered assumptions.
  • Calculations are deterministic and run locally in the browser without uploading procurement data.
  • Results are planning estimates and do not replace legal, accounting, tax, security, operational, or procurement review.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

Buy total cost = purchase price + maintenance cost over the term - residual value. Lease total cost = monthly lease payment x 12 x years + lease fees. Buy savings vs lease = lease total cost - buy total cost.
Buy total cost = purchase price + annual maintenance cost * years - residual value. Lease total cost = monthly lease payment * 12 * years + lease fees. Buy savings vs lease = lease total cost - buy total cost.

Inputs explained

Baseline spend

The current price, annual spend, quantity, or existing vendor cost you want to compare against.

Proposed pricing

The quoted price, lease payment, purchase price, subscription cost, or discount entered by the user.

One-time and ongoing costs

Implementation, transition, maintenance, administration, residual value, or internal labor costs included in the estimate.

Understanding your results

A positive buy savings result means buying is lower cost in the scenario you entered. A negative value means leasing is lower cost by the absolute value of the result.

Example scenarios

Practical scenario

A $75,000 purchase with $5,000 annual maintenance and $20,000 residual value compared with a $2,400 monthly lease over 3 years shows which option has the lower modeled cost.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Tips & Best Practices

  • Keep one-time implementation or transition costs separate from recurring savings.
  • Run a downside case with lower discounts, higher maintenance, or slower adoption before committing.
  • Confirm supplier terms, renewal clauses, usage minimums, cancellation costs, service levels, and data requirements outside the calculator.

Frequently Asked Questions

Should I treat this as procurement advice?
No. This is transparent planning math based on your inputs. Review supplier terms, service levels, tax treatment, legal obligations, and operational risk before making a sourcing decision.
Is vendor pricing or cost data uploaded?
No. These calculators run locally in your browser. Calwarden does not store, transmit, or review the prices, discounts, costs, or contract assumptions you enter.
Does this include financing, taxes, or accounting treatment?
Only if you include those amounts in the costs you enter. Accounting, tax, financing, and balance-sheet treatment require separate review.