Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Year-one ROI
536%
Annual loss avoided
$222,750
Net benefit, year one
$187,750
Net benefit, ongoing years
$207,750
Current expected annual loss (no MFA)
$225,000
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How to use this
- 1Enter number of user accounts.
- 2Enter current annual account compromise rate.
- 3Enter average cost per compromised account.
- 4Enter mfa effectiveness at blocking takeover.
- 5Enter one-time rollout cost (licensing, setup).
- 6Enter ongoing annual cost (support, licensing).
- 7Read your year-one roi on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
Multi-factor authentication is consistently cited by Microsoft and Google as blocking over 99% of automated credential-based attacks, making it one of the highest ROI controls in security when accounts are the primary attack vector. This calculator compares the one-time and ongoing cost of an MFA rollout (licensing, help desk support for enrollment and lockouts, and user training) against the expected annual loss from account takeover incidents you're currently exposed to, estimated from your user count, current incident rate, and average cost per compromised account (credential reset, incident response, potential fraud or BEC loss). The result typically shows payback within the first prevented incident, which is why MFA is treated as baseline hygiene by cyber insurers, several of whom now require it as a condition of coverage or apply a premium surcharge for its absence.
Worked example
Using the values the calculator loads with:
Inputs
- Number of user accounts: 500
- Current annual account compromise rate: 3
- Average cost per compromised account: 15000
- MFA effectiveness at blocking takeover: 99
- One-time rollout cost (licensing, setup): 20000
- Ongoing annual cost (support, licensing): 15000
Results
- Year-one ROI: 536%
- Annual loss avoided: $222,750
- Net benefit, year one: $187,750
- Net benefit, ongoing years: $207,750
- Current expected annual loss (no MFA): $225,000
What each field means
Inputs
- Number of user accounts
- The number of user accounts used in the calculation. Starts at 500 so you have a working example on load.
- Current annual account compromise rate
- The current annual account compromise rate used in the calculation. Starts at 3 so you have a working example on load. Accepted range: 0–100.
- Average cost per compromised account
- The average cost per compromised account used in the calculation. Starts at 15000 so you have a working example on load.
- MFA effectiveness at blocking takeover
- The mfa effectiveness at blocking takeover used in the calculation. Starts at 99 so you have a working example on load. Accepted range: 0–100.
- One-time rollout cost (licensing, setup)
- The one-time rollout cost (licensing, setup) used in the calculation. Starts at 20000 so you have a working example on load.
- Ongoing annual cost (support, licensing)
- The ongoing annual cost (support, licensing) used in the calculation. Starts at 15000 so you have a working example on load.
Results
- Year-one ROI
- Returned as a percentage and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annual loss avoided
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net benefit, year one
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net benefit, ongoing years
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Current expected annual loss (no MFA)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Is 99% effectiveness realistic for all MFA methods?
That figure applies to phishing-resistant and app-based push/TOTP MFA against automated, credential-stuffing style attacks, which is the vast majority of account takeover attempts. SMS-based MFA is weaker against targeted SIM-swap attacks, and even strong MFA can be defeated by MFA fatigue or adversary-in-the-middle phishing kits, so treat 99% as the ceiling for common attack types, not a guarantee against a determined targeted attacker.
Why do cyber insurers care so much about MFA specifically?
Insurers have claims data showing a large share of ransomware and business email compromise incidents start with a compromised credential and no second factor to stop it, making MFA one of the single highest-leverage controls per dollar. Many carriers now require it on remote access, email admin accounts, and privileged access as a baseline condition of binding a policy, and some deny claims outright if it was contractually required and absent.
What's the biggest hidden cost in an MFA rollout?
Help desk load during the first 60-90 days from lockouts, lost devices, and enrollment confusion, which can temporarily spike support tickets 20-40% above baseline. Budgeting extra help desk capacity or self-service recovery options for that window prevents the rollout itself from becoming a support crisis.
Should I roll out MFA to everyone at once or in phases?
Phased rollout starting with privileged accounts (admins, finance, executives) and remote access gives you the highest risk reduction fastest, since those accounts carry disproportionate blast radius if compromised, then expand to the full user base once your help desk process and communication templates are proven.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). MFA Rollout ROI Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/mfa-rollout-roi
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/mfa-rollout-roi" target="_blank" rel="noopener">MFA Rollout ROI Calculator — RevenueLab</a> (2026).</p>
Source: [MFA Rollout ROI Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/mfa-rollout-roi) (2026).