Estimate HR workflow hours saved, released FTE capacity, implementation and subscription TCO, 36-month NPV, ROI, payback, and break-even adoption from your own process evidence.
Defaults are not market benchmarks. Replace them with an HRIS quote, workflow logs, rework records, and pilot adoption evidence.
Separate the employee population, HR team size, FTE capacity basis, adoption, and value realization.
Basis for employee seats and per-employee TCO
Basis for admin seats and team-capacity comparison
Capacity conversion only, not a headcount-reduction assumption
Use a documented loaded-cost or opportunity-value basis
Share of cases processed through HRIS after ramp-up
Share of saved time converted into measurable value
Enter monthly case volume and HR operations time per case. For annual review cycles, divide the annual total by 12 and document seasonality separately.
| Use | Workflow | Cases/month | Current min/case | HRIS min/case | Full-adoption saving |
|---|---|---|---|---|---|
Onboarding Employee setup, documents, organization data, and account requests | cases | min | min | 12 hours | |
Employee information Data changes, certificates, organization, and role updates | cases | min | min | 12 hours | |
Leave and attendance Requests, approvals, corrections, and balance checks | cases | min | min | 30 hours | |
Performance review Cycle setup, reminders, consolidation, and distribution | cases | min | min | 20 hours |
Do not count rework already included in process time. Higher post-HRIS rework is preserved as a negative benefit.
A higher value is preserved as a negative benefit.
Retired tools or printing savings not already counted in labor value
Include internal data preparation, testing, access review, and implementation effort as well as vendor charges.
Subtract only amounts confirmed in writing.
Set delay, ramp-up, price growth, discount rate, and sensitivity for the fixed 36-month analysis.
A value of 1 means no benefit in month one.
A planning range, not a statistical confidence interval.
FTE is redeployable workload capacity, not a headcount-reduction estimate.
Steady monthly hours saved
67.2 hours
Saved FTE capacity
0.42 FTE
36-month NPV
$3,349.00
Sustained payback
26.73 months
| Workflow | Current hours | Full-adoption hours | Full-adoption saving | Adoption-adjusted saving |
|---|---|---|---|---|
| Onboarding | 20 | 8 | 12 | 9.6 |
| Employee information | 24 | 12 | 12 | 9.6 |
| Leave and attendance | 50 | 20 | 30 | 24 |
| Performance review | 32 | 12 | 20 | 16 |
| Errors and rework | 15 | 5 | 10 | 8 |
| Total | 141 | 57 | 84 | 67.2 |
Value-realized hours
33.6 h
Target-state monthly workload
73.8 h
Annualized steady saving
806.4 h
Year-one saving after ramp
672 h
Monthly saving per HR admin
33.6 h
Share of HR team capacity
21%
Net initial investment
$11,500.00
Base monthly recurring cost
$950.00
Steady monthly labor-value benefit
$1,512.00
Steady monthly gross benefit
$1,512.00
Steady monthly net benefit
$562.00
TCO per employee-month
$12.98
First payback
26.73 months
Discounted payback
28.41 months
NPV break-even adoption
74.36%
| Metric | 12 months | 36 months |
|---|---|---|
| Actual hours saved | 672 h | 2,284.8 h |
| Total benefit | $15,120.00 | $51,408.00 |
| TCO | $22,900.00 | $46,736.00 |
| Nominal net benefit | -$7,780.00 | $4,672.00 |
| ROI | -33.97% | 10% |
| Year | Month range | Average ramp | Actual hours saved | Benefit | Recurring cost | Net cash flow | Nominal cumulative | Discounted cumulative |
|---|---|---|---|---|---|---|---|---|
| 1 | 1–12 | 83.33% | 672 | $15,120.00 | $11,400.00 | $3,720.00 | -$7,780.00 | -$7,934.84 |
| 2 | 13–24 | 100% | 806.4 | $18,144.00 | $11,742.00 | $6,402.00 | -$1,378.00 | -$1,996.14 |
| 3 | 25–36 | 100% | 806.4 | $18,144.00 | $12,094.00 | $6,050.00 | $4,671.74 | $3,348.56 |
| Scenario | Steady benefit | Steady recurring cost | 36-month NPV | ROI | Sustained payback |
|---|---|---|---|---|---|
| Base | $1,512.00 | $950.00 | $3,349.00 | 10% | 26.73 months |
| Adoption down | $1,210.00 | $950.00 | -$6,157.00 | -12% | Not recovered in 36 months |
| Workflow savings down | $1,210.00 | $950.00 | -$6,157.00 | -12% | Not recovered in 36 months |
| Recurring cost up | $1,512.00 | $1,140.00 | -$3,188.00 | -4.42% | Not recovered in 36 months |
| Combined downside | $968.00 | $1,140.00 | -$20,298.00 | -38.83% | Not recovered in 36 months |
Method and Korean implementation boundary checked 2026-08-04. Korea PIPA ID 011357, MST 270351 Articles 15, 26, and 29 and Decree ID 011468, MST 286175 Article 30 are retained only as collection, processor, and safeguards review boundaries. They provide no price, adoption, or productivity default. Users elsewhere must apply their own jurisdiction.
An HR information system quote makes setup fees and seat prices visible, but the claimed productivity benefit is often harder to audit.
A percentage applied to payroll or employee count cannot explain how many onboarding cases, data changes, leave requests, attendance corrections, or review-cycle tasks the HR team actually handles.
This calculator starts with monthly case volume and current-versus-HRIS minutes per case for four HR workflows, then adds a separate rework estimate.
The model applies target adoption to operational hours saved and applies a separate realization rate before converting time into financial value.
It then combines implementation costs, employee and administrator seats, support, integrations, price growth, rollout delay, ramp-up, and discounting in one fixed 36-month cash-flow model.
Saved FTE capacity is adopted monthly hours saved divided by the monthly hours entered for one FTE.
It may support faster service, better controls, avoided future hiring, or reassigned work, but it does not prove that payroll will fall.
Use the time-value realization rate to include only the share that has a documented path to measurable value.
For each enabled workflow, enter average monthly cases, current active handling minutes per case, and expected HRIS handling minutes per case.
Keep the start and end points identical before and after implementation, and use work logs or a pilot sample rather than a vendor headline.
| Workflow | Possible scope | Measurement | Evidence |
|---|---|---|---|
| Onboarding | Employee setup, forms, organization data, and account requests | cases × min/case | Ticket, checklist, or workflow logs |
| Employee information | Profile, bank, role, organization, and certificate changes | cases × min/case | Request and completion records |
| Leave and attendance | Requests, approvals, corrections, and balance checks | cases × min/case | Leave and timekeeping logs |
| Performance review | Cycle setup, reminders, consolidation, and distribution | cases × min/case | Annual cycle work log ÷ 12 |
Use four to twelve weeks of logs for frequent work.
For an annual review cycle, divide annual cases and active handling time by twelve for the ROI model, then keep peak-month staffing as a separate operating constraint.
Approval waiting time may matter to service speed, but it is not automatically paid work saved.
Enter active handling time for labor-value calculations and track end-to-end lead time as a separate service metric.
Missing fields, duplicate entry, outdated files, incorrect approval paths, and data migration defects create work outside the normal case flow.
Enter current and expected monthly rework cases with minutes per correction so the effect remains traceable.
Do not enter the same rework time again if it is already included in the workflow minutes per case.
If HRIS handling takes longer or rework increases, the calculator retains negative time savings instead of clamping them to zero.
This makes a difficult implementation scenario visible in ROI, NPV, and payback results.
Measure adoption as the share of eligible HR cases completed through the new workflow, not merely the share of employees who logged in.
Other savings should contain only documented amounts that are not already represented by labor time, such as a retired duplicate tool or avoided printing and storage expense.
Comparing labor value with subscription price alone usually understates total cost.
Keep supplier and internal implementation work in the initial investment, and keep every recurring service that remains after launch in the monthly cost base.
Use one consistent tax basis across every cost input and confirm capitalization, amortization, and tax treatment with the organization responsible for accounting.
If a confirmed discount exceeds gross initial cost, the model limits net initial investment to zero and does not create artificial income.
Benefits rarely reach their target level when the contract starts.
With a one-month benefit delay and a three-month ramp, month one has no benefit, months two and three receive one-third and two-thirds of steady benefit, and month four reaches the target level.
Recurring costs begin in month one, so first-year ROI is not steady monthly benefit multiplied by twelve.
| Metric | Calculation | Interpretation |
|---|---|---|
| 12-month ROI | (first-year benefit − first-year TCO) ÷ first-year TCO | Includes all initial investment, delay, ramp, and year-one recurring cost |
| 36-month ROI | (three-year benefit − three-year TCO) ÷ three-year TCO | Nominal comparison before discounting |
| 36-month NPV | −initial investment + discounted monthly net cash flow | Present-value result using the entered annual discount rate |
| Sustained payback | First interpolated crossing that remains nonnegative through month 36 | Returns no payback when recovery does not occur within the horizon |
| Cost per employee-month | 36-month TCO ÷ employees ÷ 36 | A normalized cost view, not a market benchmark |
The English defaults are a fictional USD formula example, not a survey median, supplier quote, recommended rate, or conversion of the Korean defaults.
They use 100 employees, two HR administrators, 160 monthly hours per FTE, a $45 loaded hourly cost, 80% target adoption, and 50% time-value realization.
| Segment | Full-adoption saving | Example assumption |
|---|---|---|
| Onboarding | 12 hours/month | 8 cases, 150 → 60 minutes |
| Employee information | 12 hours/month | 120 cases, 12 → 6 minutes |
| Leave and attendance | 30 hours/month | 300 cases, 10 → 4 minutes |
| Performance review | 20 hours/month | 48 cases, 40 → 15 minutes |
| Error rework | 10 hours/month | 30 → 10 cases at 30 minutes |
84 hours/month
74 workflow hours plus 10 rework hours
67.2 hours/month
84 hours × 80% adoption
0.42 FTE
67.2 hours ÷ 160 hours
$1,512
67.2 × 50% realization × $45
$11,500
$12,000 gross less $500 confirmed discount
$950/month
Platform, seats, support, and other recurring cost
With a one-month delay, three-month ramp, 3% annual recurring-cost growth, and 5% annual discount rate, first-year TCO is $22,900 and first-year ROI is about −33.97%.
The 36-month TCO is $46,736, nominal net value is $4,672, nominal ROI is about 10.00%, and NPV is $3,349.
Sustained nominal payback occurs at about month 26.73, discounted payback at about month 28.41, and the NPV break-even adoption rate is about 74.36%.
The base NPV is positive, but each 20% downside scenario turns it negative, so the example signals assumption risk rather than recommending a purchase.
Break-even adoption is the case-adoption rate that makes 36-month discounted NPV equal zero while all other inputs remain fixed.
A result above 100% means adoption alone cannot close the modeled gap, so scope, implementation cost, recurring services, workflow evidence, or the realization path needs review.
It is a fictional planning range, not an industry failure rate, confidence interval, or statistical forecast.
Replace it with pilot variation, contractual price ranges, and evidence from the organization being analyzed.
HRIS products handle identity, employment history, attendance, performance, and access-control data, so a positive NPV does not establish legal, security, or operational suitability.
Review lawful processing, data minimization, processor and subprocessor terms, hosting regions, retention, deletion, access removal, encryption, audit logs, incident handling, and exit portability under the laws and contracts that apply to the deployment.
| Korean deployment reference | Review topic | Calculator boundary |
|---|---|---|
| PIPA Article 15 | Basis and scope for collection and use | Does not decide lawful basis or minimum fields |
| PIPA Article 26 | Processor documentation, disclosure, oversight, and subcontracting | Does not approve a SaaS contract or processor |
| PIPA Article 29 | Technical, managerial, and physical safeguards | Does not verify product controls or certification |
| Enforcement Decree Article 30 | Management plans, access control, encryption, and access logs | Requires separate implementation evidence |
For the Korean reference only, the current Personal Information Protection Act record checked on August 4, 2026 was law ID 011357, MST 270351, effective October 2, 2025.
The current Enforcement Decree record was law ID 011468, MST 286175, effective May 19, 2026.
These provisions do not supply any price, adoption, time-saving, or productivity default used by the calculator, and deployments elsewhere require their own jurisdiction-specific review.
No. It is a capacity conversion based on saved monthly hours and the entered FTE-hour standard. Cash savings, avoided hiring, redeployment, and service improvement are separate management outcomes that need evidence.
No. Use the share of eligible HR cases completed through the new workflow. A user may log in while still sending leave or data-change requests through email or chat.
Divide annual cases and active handling hours by twelve for the cash-flow model, while retaining a separate peak-capacity plan for the concentrated review months.
Only if it falls inside the defined process boundary and is not counted in another payroll analysis. Avoid entering the same saved hours in both this model and a payroll outsourcing comparison.
Use documented nonlabor savings that are not already counted, such as a retired tool or avoided printing. Do not add the financial value of rework time if the rework section already captures it.
The current assumptions cannot achieve a zero 36-month NPV through adoption alone. Recheck scope, seat counts, setup and support cost, handling-time evidence, and the value-realization path.
No. NPV is only the financial result of entered assumptions. Privacy, security, integration quality, contractual exit, data portability, supplier viability, and workforce acceptance require separate decisions.
The legal and methodological references do not provide market-average prices or promised productivity gains.
Recheck applicable law and supplier terms when the model is reused, while keeping every commercial and operational assumption attributable to actual evidence.
Replace the example with observed case volume, before-and-after handling time, rework, implementation scope, and recurring contract terms.
Carry the downside scenarios and privacy review into the decision record so a single positive base-case number does not hide execution risk.