01
Decisions made without reliable cost data
Spreadsheet estimates are built manually, one request at a time. The numbers are outdated before they are approved. 60% of mobility team time is spent on admin, not strategy. (Source: Horizon Dock)
Cost Simulations
Know the cost before you commit.
Relocation decisions carry real financial weight. Cost Simulations gives your team the tools to model full employer cost, compare scenarios side by side, and generate formal cost estimates with a complete audit trail, all tied directly to your policies and powered by Topia's tax engine.
One platformEvery dimension of mobility.
AI-poweredTax engine and rate tables built in.
Full audit trailField-level diffs on every estimate.
The problem
Mobility decisions get made before finance has the numbers.
02
Scenario comparison is too slow
Comparing a full expat package against a localized approach takes days when each scenario is a separate spreadsheet. By the time the analysis is ready, the business has moved on.
03
Cost estimates have no audit trail
No record of who ran the estimate, which policy version it used, or what assumptions drove the numbers. 72% of mobility teams lack real-time data. (Source: Horizon Dock)
Why Cost Simulations
Spreadsheets were not built for this.
Before
LegacyTraditional approach
- Spreadsheet estimates built manually, one request at a time.
- Scenario comparison requires rebuilding each estimate from scratch.
- No record of who ran the estimate or which policy version it used.
- Cost data disconnected from the policy.
- Formal estimates require external providers and take days.
- No way to create a move record from an approved estimate.
With Horizon
ActiveHorizon Cost Simulations
- 01Full employer cost modeled in minutes with built-in tax engine and rate tables.
- 02Clone any simulation and swap tax approach, policy tier, or worker type.
- 03Every change tracked with before/after snapshots and user attribution.
- 04Simulations tie directly to the policy tier selected.
- 05Formal cost estimates generated in one click, shareable via link or PDF.
- 06Create a move record directly from an approved simulation, no re-entry.
What it does
From compensation input to stakeholder-ready cost estimate.
01
Model full employer cost in minutes
Select origin and destination countries, enter compensation, and choose a policy tier. Net-to-gross, housing, COLA, hardship allowances, and tax equalization run automatically via Topia's tax engine and centrally maintained rate tables.
02
Compare scenarios side by side
Clone any simulation and swap the tax approach, policy tier, or worker type. Run a full expat package against a localized approach, or compare employee versus contractor cost, all within the same project.
03
Run group and project-based simulations
Model an entire office expansion or intern cohort in a single project rather than one simulation at a time. Finance sees the aggregate cost picture before any headcount commitment is made.
04
Generate formal cost estimates
When a scenario is approved, generate a formal cost estimate for stakeholder sign-off in one click, with digital signature support. Share via link or export as a PDF report. Every change is tracked with field-level diffs.
05
Connect to policies, moves, and payroll
Simulations tie directly to the policy tier selected, so numbers always reflect current policy. When approved, create a move record from the simulation in one click: origin, destination, policy, compensation, and start date carry across automatically.
How it works
Input once. Compare everything. Decide with confidence.
01
Set
Select origin and destination countries, enter the employee's compensation, and choose a policy tier. Rate tables, FX rates, and tax rules load automatically.
02
Run
Total employer cost appears instantly. Net-to-gross, housing, COLA, and gross-up are calculated by Topia's tax engine. No manual lookups.
03
Compare
Clone the simulation and swap any variable. Side-by-side scenario comparison gives stakeholders the full cost picture before any decision is made.
04
Export
Generate a formal cost estimate for sign-off in one click. Share via link or PDF. When approved, create a move record directly from the simulation.
Built-in Intelligence
AI working inside every simulation.
AI Agent
Ask about tax and immigration risk for any move scenario using natural language. Get instant answers without leaving the simulation. 69% of mobility teams want AI-powered scenario modeling. (Source: AI Inflection Point report)
Policy-linked simulations
Policy changes flow into every linked simulation automatically, so estimates never drift from current entitlements.
Formal cost estimates
Generate and export polished stakeholder reports with digital signature support in one click.
Field-level audit trail
Every change tracked with before/after snapshots and user attribution. Full auditability on every estimate.
Collaboration built in
Notes, mentions, and notifications per simulation keep the right people in the loop without email chains.
Platform Preview
Example use cases
Built for the decisions that matter most.
US to Germany relocation
A mobility analyst models three scenarios: full expat package, localized, and hybrid. The CFO reviews the side-by-side comparison, approves the localized approach, and the analyst creates the move record from the simulation in one click.
Singapore office expansion
Ten employees are relocating from four origin countries. A single group simulation models all ten moves in one project, giving Finance the aggregate cost before any offers are made. Individual cost estimates are generated per employee for stakeholder sign-off.
Employee versus contractor decision
Before committing to a long-term assignment, the business wants to know whether a contractor arrangement would be more cost-effective. Both scenarios run with the same origin, destination, and role inputs, so the comparison is direct, not based on separate estimates built by different people.
Who it's for
Built for every stakeholder who owns a move decision.
Finance
Get the full cost picture before any offer is made. Scenario comparisons, group simulations, and formal cost estimates give you the data to approve moves with confidence.
Mobility
Stop rebuilding estimates in spreadsheets for every new request. Run accurate simulations in minutes, tied directly to current policy and rate tables.
HR
Support talent decisions with reliable cost data. When the business asks whether a relocation is feasible, you have an answer backed by policy and real numbers.
Risk and Compliance
Every simulation links to a policy version with a full audit trail. When a cost estimate is challenged, the record of how it was built is already there.
Works even better with
Cost Simulations connects across the Horizon platform.
AI-Assisted Policy Builder
Simulations pull entitlements directly from your published policy tiers. When policy changes, every linked simulation reflects it automatically.
Learn more about AI-Assisted Policy BuilderMoves
Approve a simulation and create a move record in one click. Origin, destination, policy, compensation, and start date carry across with no re-entry.
Learn more about MovesRates and Taxes
AIRINC, Mercer, and custom rate tables feed directly into your simulations. Every calculation reflects current, centrally maintained data.
Learn more about Rates and TaxesReady when you are
Ready to see Cost Simulations in action?
A personalized walkthrough with your team's move scenarios. See how Cost Simulations gives you the data to approve moves with confidence.