A: You can use SpreadJS, a JavaScript spreadsheet component, to create real-time dashboards with KPIs, financial charts, and sparklines. Data can be bound from APIs or streaming services, making it ideal for trading apps and portfolio monitoring.
Embed Excel-Like Spreadsheets in JavaScript Financial Apps
Build interactive P&Ls, cash flow models, and financial JavaScript spreadsheets and dashboards directly in the browser with SpreadJS. 500+ Excel-compatible functions, and rich visualizations.
Ready for Common Finance & Accounting Models
Profit Loss Projection Statement
Expandable hierarchies, subtotals, grouping, and drilldowns.
- SUMIF, SUBTOTAL, and outline grouping
- Protect rows/columns; enable drill-down
Balance Sheet
Cross-sheet references, validation, and locked templates.
- Named ranges for clarity
- Cross-sheet references with validation rules
- Add Optional Pivot Table Capabilities
Cash Flow Calendar
Rolling periods and conditional formatting.
- EDATE/EOMONTH for rolling dates
- SEQUENCE/FILTER create cell-level summaries
- Conditional formatting to display positive, negative, and neutral balances
Budget vs. Actual
Variance analysis with conditional formatting & pivots.
- Conditional highlights for negative variance
- Pivot summaries by region or product
Forecasting
Scenario toggles, assumptions, and dynamic arrays.
- Scenario: best / base / worst
- Sensitivity tables for rate changes
ERP/GL Reporting
Pull annual financial data from APIs using WEBSERVICE and FILTERJSON.
- Auto-refresh from ERP or accounting APIs
- Export Excel/PDF for auditors.
Real-Time Collaboration
Enable multiple users to edit spreadsheets at the same time.
- Live presence indicators and cursor tracking.
- Sync changes instantly with enterprise storage systems.
Grid-Based Financial Input Forms
Build budget and forecasting forms with Excel-style controls.
- Link cell data for instant updates across financial models.
- Capture compliance-ready inputs for regulatory filings.
AI-Assisted Formulas
Generate complex formulas from plain-language rules.
- Explain logic behind risk, compliance, or pricing models
- Accelerate audit reviews with transparent formula breakdowns
Finance Demands Accuracy. SpreadJS Delivers.
Cell & Sheet Locking
Protect mission-critical ranges with granular permissions.
What-If Analysis for Every Scenario
Switch assumptions, run sensitivities, and simulate risk, all in-browser with SpreadJS.
Scenario Toggles
Best / Base / Worst with dropdowns.
// Set scenario in a named cell and cascade formulas
const scenario = sheet.getValue(0, 1); // B1: 'base'
const growth = scenario === 'best' ? 1.12 : scenario === 'worst' ? 0.9 : 1.04;
sheet.setFormula(5, 3, '=Revenue_2025*' + growth);Sensitivity Tables
Interest rates, FX, or volume impacts.
// Two‑way sensitivity table (rates x volume)
// Populate a range and compute a matrix of outcomes
for (let r = 0; r < rates.length; r++) {
for (let c = 0; c < vols.length; c++) {
sheet.setFormula(startRow + r, startCol + c, '=NPV(' + rates[r] + ', CashRange)*' + vols[c]);
}
}Risk Simulation
Monte Carlo using random draws.
// Monte Carlo sample (simplified)
for (let i = 0; i < 5000; i++) {
const shock = Math.random() * sigma - sigma/2;
sheet.setValue(i, 0, basePnl * (1 + shock));
}
// Summarize distribution in a histogram rangeConnect Your Financial Systems
Bind trial balances and transactions from ERP/GL APIs; refresh dashboards in real time; export to Excel (XLSX) or PDF for auditors.
API Binding (JSON)
Minimal code to hydrate a sheet from your backend.
// Fetch trial balance and bind into named range
const res = await fetch('/api/trial-balance?period=2025-08');
const tb = await res.json();
sheet.setArray(2, 1, tb.rows); // write rows starting B3
// Example formula in template: =SUMIF(AccountType, 'Revenue', Amount)Export & Share
One click to export Excel or PDF for stakeholders
- Export entire workbook or selected sheets.
- Embed the optional web-based Designer Ribbon Toolbar and ReportSheet builder for self-serve XLSX reports.
- Lock formulas; share read-only views for auditors.
Trusted Across Finance
From banking and insurance to asset management and accounting firms, SpreadJS powers web-based models your users already know.
Banking
Design dynamic loan and mortgage calculators with amortization schedules and interest projections.
Insurance
Model claim patterns and predict reserves with actuarial formulas and data-driven dashboards.
Asset Management
Track portfolio allocations, performance attribution, and risk metrics in real time.
Accounting
Prepare consolidated financials and workpapers with live ERP data and audit-ready controls.
Why Developers Choose SpreadJS for Finance Applications
Excel compatibility, framework integration, performance at scale, and granular security, all in one spreadsheet engine.
Highlights
- 500+ Excel-compatible functions (financial, statistical, arrays).
- React / Angular / Vue & TypeScript support.
- High-performance calculation engine.
- Add your own secure fine-grained protection and permissions.
Starter Snippet
Initialize, set a formula, and lock a range.
// Pseudo‑code: initialize and configure
const sheet = workbook.getActiveSheet();
sheet.setValue(0, 0, 'Revenue');
sheet.setFormula(0, 1, '=SUMIF(Accounts, "Revenue", Amounts)');
// Protect assumptions range
sheet.getRange(2,0,5,2).locked(true);JavaScript Spreadsheet FinTech Developer FAQs
Q: How can I build a financial dashboard in JavaScript?
Q: How can I add real-time collaboration to financial models?
A: With the SpreadJS real-time collaboration add-on, multiple users can co-edit the same spreadsheet inside a web application. This is especially useful for budgeting, forecasting, and financial planning apps.
Q: Does SpreadJS support role-based editing or permissions?
A: SpreadJS allows fine-grained protection rules where developers can define which actions users are allowed, such as editing cells, resizing rows, or inserting formulas that helps you create your own app-level authentication and role-based security permissions.
Q: How can I secure financial data in a JavaScript spreadsheet?
A: SpreadJS includes sheet protection options that let developers lock worksheets, secure formulas, and restrict editing access. This helps ensure sensitive financial data remains protected in compliance-heavy environments.
Q: Does SpreadJS support AI features for FinTech applications?
A: Yes. The AI Spreadsheet Assistant add-on allows financial teams to generate formulas, reports, and queries using natural language—accelerating onboarding and reducing manual coding.
Q: How can I enforce data integrity in FinTech applications?
A: SpreadJS provides data validation rules (dropdowns, value ranges, custom formulas) that ensure only valid data can be entered. This is critical for compliance workflows like KYC/AML forms, risk scoring, or audit-ready spreadsheets.
Q: Is encryption or password protection available?
SpreadJS supports Excel-like sheet protection with passwords, preventing unauthorized users from unprotecting a sheet. For enterprise apps, this can be combined with server-side encryption for end-to-end data security.
Build Your Own JavaScript FinTech Spreadsheet App
| Quick Start Guide | |
|---|---|
| 1. Download the Latest SpreadJS Release or get it from npm |
Download Full Trial |
| 2. Include the SpreadJS script and CSS files in the documents Head section. Replace “XX.X.X” with the release version downloaded. |
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| 3. Add a DIV container to host the JavaScript spreadsheet instance. |
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| 4. Initialize the JavaScript spreadsheet |
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Learn more with our complete quick start guide for SpreadJS.
SpreadJS Media and Content
Award-Winning Products and First-Class Support
"I have been using a various form of Spread back to the COM days. Spread is the most reliable spreadsheet that retrieves and stores data, whether interacting with a database or simply an Excel file. Try it out, and you will not go back to any other control"
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