Stello AI vs Spreadsheets: When It’s Time to Make the Switch

Side-by-Side Comparison

Capability	Spreadsheets (Excel/Google Sheets)	Stello AI
Cycle duration	8–12 weeks typical	2 weeks typical
Data source	Manual export from HRIS, copy-paste, and manual updates	Live HRIS connection — refreshes every 2 weeks automatically
Recommendations	HR builds formulas and manually calculates each increase	AI generates recommendations for every employee based on budget, policy, market data, and internal equity
Manager workflow	Email spreadsheet to each manager → collect → consolidate → reconcile conflicts	Manager opens dashboard, sees team, reviews AI recommendation, approves or adjusts
Budget control	Sum formulas — discover overruns after the fact	Real-time enforcement — system prevents overspend before submission
Version control	Comp_v7_FINAL_JohnEdits_v3.xlsx	One system, one version, full audit trail of every change
Pay equity	Separate analysis in a different spreadsheet, if it happens at all	Built into the cycle — flags gaps during decisions, not after
Market data	Manually look up surveys, copy into spreadsheet, match jobs by hand	AI matches jobs and pulls market data automatically
Currency conversion	Manual formula with exchange rates you looked up last month	180+ currencies with live rates
Offer generation	Build from scratch in a Word doc or email every time	AI generates a complete offer with market justification and internal equity check in seconds
Total rewards	Not practical — would need to build a custom report per employee	Year-round employee portal showing salary, equity, bonuses, and benefits
Security	File on someone’s laptop or shared drive. No access controls. Anyone with the file sees everyone’s salary.	SOC-2 certified, role-based access, SSO, encrypted data, full audit trail
Audit trail	Who changed cell B47? No one knows.	Every change is logged with a timestamp, the user, and the previous value
Scalability	Works with 50 employees. Breaks at 500.	Built for 500–7,000+ employees

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The Seven Problems That Make Companies Switch

You’ve probably experienced at least three of these. Most companies that switch to compensation software have hit five or more.

Problem 1: The Cycle Takes Too Long

A spreadsheet-based merit cycle at a 500-person company looks like this. HR exports data from the HRIS. Spends a week cleaning it and building the merit planning spreadsheet with formulas, salary bands, budget pools, and compa-ratios. Distributes individual sheets to each manager. Managers sit on them for two weeks because the format is confusing and they have real jobs to do. HR collects them and discovers that half the managers used the wrong version. Consolidation takes another week. Finance reviews and sends it back with questions. Two more rounds of revision. Leadership approves. HR manually enters changes into the HRIS.

Eight to twelve weeks. Every year.

With Stello, the AI pulls live data from your HRIS, generates recommendations, and gives every manager a dashboard on day one. Managers review and approve. Budget enforcement happens in real time. No consolidation step. Most customers finish the cycle in about two weeks.

Problem 2: Nobody Trusts the Data

Spreadsheets create a fundamental trust problem. The data is only as fresh as the last time someone manually exported it. If someone got promoted last week and it’s not reflected in the spreadsheet, every calculation downstream is wrong. If a formula breaks in row 347 and nobody notices, the budget looks fine until it isn’t.

Stello connects directly to your HRIS. Data refreshes automatically every two weeks — or more often if needed. One source of truth, no stale exports, no broken formulas.

Problem 3: Managers Don’t Know What to Do

When you email a manager a spreadsheet with 20 columns of compensation data, most of them don’t know what they’re looking at. What’s a compa-ratio? What does “band position 0.92” mean? Which column do I edit? Can I give someone more than 4%?

The result is either managers making uninformed decisions or managers ignoring the spreadsheet entirely and telling HR what they want in an email, which defeats the purpose of the spreadsheet in the first place.

Stello’s manager dashboard shows each direct report with their pay position visualized, the AI’s recommended increase with reasoning, and a simple approve/adjust interface. A manager who has never used compensation software can understand it in five minutes. No training required.

Problem 4: Budget Overruns Discovered Too Late

In a spreadsheet process, budget compliance is checked after managers submit their recommendations. HR consolidates all the spreadsheets, runs the totals, and discovers that three departments are 15% over budget. Now someone has to go back to those managers and negotiate reductions. This creates friction, delays, and resentment.

Stello enforces the budget in real time. As a manager makes recommendations, the system shows the remaining budget. If an adjustment would push the department over its pool, the system flags it before submission. Budget overruns simply don’t happen.

Problem 5: Pay Equity Is an Afterthought

Running a pay equity analysis in spreadsheets is a separate project. Someone has to pull the data, build an analysis, identify gaps, and then figure out how to incorporate the findings into the next cycle. Most organizations don’t do it at all because the manual effort is too high. And when they do, the findings arrive after the cycle is already closed — too late to affect the decisions that were just made.

Stello runs pay equity analysis continuously. During a merit cycle, it flags when a manager’s recommendation would widen an existing pay gap. Between cycles, you can ask Iconic to analyze pay equity across any dimension — gender, ethnicity, location, level — and model the cost to close gaps. The analysis isn’t an afterthought. It’s part of how the system works.

Problem 6: Salary Data Is a Security Risk

A merit planning spreadsheet contains every employee’s name, salary, performance rating, and proposed increase. Now imagine that file living on a shared drive, attached to 40 different emails, and sitting on the desktop of every manager who participated in the cycle. One laptop left at a coffee shop and you have a data breach.

Stello is SOC-2 certified with role-based access controls. A manager only sees their direct reports. HR sees their scope. Leadership sees the full picture. Nobody downloads a file with the entire company’s salary data. SSO (Auth0, SAML, Azure AD) controls who gets in.

Problem 7: No Audit Trail

Someone asks you: “Why did Sarah get 3.2% instead of 4%?” In a spreadsheet, the answer might be “I think John changed it at some point” or “I’m not sure which version that was in.” There’s no record of who changed what, when, or why.

Stello logs every change with a timestamp, the user who made it, the previous value, and the new value. When someone asks why a decision was made, you have the full history.

What Doesn’t Change When You Switch

Not everything is different. A few things stay the same, and it’s worth setting expectations.

You still need a compensation philosophy. Stello can enforce your rules and model your scenarios, but you still decide what those rules are. How aggressive is your market positioning? What’s your merit budget? How do you weigh performance vs. tenure? The AI works with whatever philosophy you define.

Managers still make the final call. Stello generates recommendations, but managers review and approve them. The AI doesn’t replace human judgment — it eliminates the manual work that slows it down.

You still need to communicate changes to employees. Stello automates this with total rewards statements, but someone needs to decide what message to convey and how to frame it. The tool handles the delivery; you own the story.

Your compensation team still matters. The value of a comp team isn’t in building spreadsheets. It’s in designing the strategy, interpreting the data, and making the hard calls that no algorithm should make alone. Stello frees them to do that work instead of formatting cells.

The Switch Is Faster Than You Think

Most companies assume moving off spreadsheets is a multi-month project. It doesn’t have to be.

Stello’s implementation takes about two weeks. Here’s what that looks like in practice.

Week 1: Stello’s engineering team connects to your HRIS, pulls employee data, and configures your compensation structure — bands, levels, budget rules, approval chains. You don’t need to build this from scratch. They work from your existing spreadsheet structure and translate it into the platform.

Week 2: Manager training, test run of the workflow, and final configuration adjustments. By the end of week two, you can open your next merit cycle in Stello instead of Excel.

You don’t need to migrate historical data to get started. Stello works with your current employee data. Historical analysis can be added later.

What Caribou’s Switch Looked Like

Caribou, a Denver-based technology company, was managing compensation in Excel and within UKG’s compensation planning module. Senior leaders spent valuable time manually updating spreadsheets, reviewing salary increases, and exchanging new versions of the same file. This led to poor visibility on the reasoning behind compensation changes.

After switching to Stello, their Senior Manager of Total Rewards, Emily DeVore, said the platform “blew other potential solutions out of the water.” Caribou was up and running in a few weeks. They integrated with UKG and later added Carta for equity data. Employees now navigate to one place to see their full total rewards instead of checking separate systems for salary, equity, and benefits.

Read more: How Caribou simplified their compensation cycle 

Decision Checklist: Are You Ready to Switch?

You don’t need to check every box. But if you recognize three or more, spreadsheets are probably costing you more than you realize.

• Your merit cycle takes more than 4 weeks
• Managers complain about the spreadsheet being confusing
• You’ve had a budget overrun that wasn’t caught until after approvals
• You can’t answer “why did this person get X%?” with a specific audit trail
• Your comp data has been emailed to 10+ people as a file attachment
• You don’t pay for equity analysis because the manual effort is too high
• You’ve had data errors in your merit cycle (wrong salary, wrong formula, wrong version)
• You spend days on currency conversion for international employees
• Employee questions about their compensation require manual lookups across multiple systems
• Your CFO has asked for budget scenarios, and you need a week to model them

If three or more apply, the switch will pay for itself in the first cycle — in time saved, errors avoided, and decisions improved.

Frequently Asked Questions

How much does Stello AI cost compared to staying on spreadsheets?

Spreadsheets are “free” — until you count the cost. A two-month merit cycle for a 500-person company consumes hundreds of hours from HR, finance, and managers. Errors lead to budget overruns or equity issues. Security risks create legal exposure. When you factor in the fully-loaded cost of the time spent managing compensation in spreadsheets, most companies find that dedicated software pays for itself in the first cycle. Stello offers custom pricing based on headcount — book a demo for a quote.

Will my managers actually use compensation software?

This is the number one concern we hear. And it’s valid — if the tool is complicated, managers will ignore it and email HR instead. Stello’s manager interface is deliberately simple. See your team. See the recommendation. Approve or adjust. That’s it. Managers who have never used comp software can start making decisions within minutes. No training class required.

Can Stello import our existing spreadsheet data?

You don’t need to import spreadsheet data. Stello connects to your HRIS and pulls current employee data directly. Your existing spreadsheets informed the compensation structure (bands, levels, budgets), which Stello’s team configures during implementation. You’re not migrating a spreadsheet — you’re replacing the process.

What if we have a custom process that doesn’t fit standard software?

Stello is configurable. Your budget distribution method, approval chain, recommendation guidelines, and comp philosophy are set up during the 2-week implementation. If your process has specific steps or rules, Stello’s team will work with you to configure them. The platform adapts to your process, not the other way around.

Do we need to switch all at once?

You can start with one cycle or one population. Some companies pilot Stello with one business unit or one country before rolling it out company-wide. This reduces risk and lets you prove the value internally before committing fully.

What happens to our spreadsheet historical data?

It stays wherever it is. Stello doesn’t require historical data to function — it works with your current employee information from your HRIS. If you want to bring historical data into Stello for trend analysis, that can be done later. There’s no requirement to migrate everything on day one.

How secure is Stello compared to our current spreadsheets?

There’s no comparison. A spreadsheet with salary data on a shared drive or in someone’s email is a data breach waiting to happen. Stello is SOC-2 certified with encryption at rest and in transit, role-based access controls (managers only see their direct reports), SSO through Auth0/SAML/Azure AD, and a full audit trail. It’s the difference between leaving cash on a table and putting it in a vault.

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Ready to run your next comp cycle without spreadsheets? Book a demo at getstello.ai