The New Face of Financial Due Diligence
In today’s fast-moving business world, deals happen quickly. Whether it’s a startup raising money or a large company buying another business, every successful transaction depends on financial due diligence (FDD) – checking that the numbers and assumptions are correct.
In the past, due diligence meant a lot of manual work, long spreadsheets, slow reconciliations, and limited insights.
Now, technology has completely changed this process.
Modern outsourced transaction advisory services use digital tools to deliver faster, more accurate, and more insightful financial due diligence. Tools like Strongbox, Power Query, Advanced Excel, Power BI, and AI help experts analyze data quickly and clearly.
1. Why Technology Matters in Due Diligence
Old-style due diligence had many problems:
- Teams spent weeks collecting and checking data.
- Information from accounting, tax, and operations didn’t always match.
- Thousands of transactions had to be reviewed manually.
- Reports took too long, delaying deals.
With today’s tools, outsourced firms can:
✅ Deliver reports faster
✅ Reduce manual errors
✅ Give real-time dashboards and insights
✅ Handle more deals at once
2. Strongbox: Collecting and Organizing Data Automatically
Strongbox is a tool that connects directly to accounting systems like QuickBooks, Xero, or NetSuite. It pulls financial data automatically, saving hours of manual work.
How it helps:
- Downloads financial data directly from the system.
- Organizes trial balances and ledgers in a clean format.
- Helps identify trends or unusual transactions quickly.
Example:
If a company uses QuickBooks, Strongbox can instantly show total revenue by customer, major expenses, and cash flow trends — work that normally takes several days.
3. Power Query: Cleaning and Combining Data
Once data is collected, it needs to be cleaned and prepared for analysis. Power Query, part of Excel and Power BI, makes this process simple and repeatable.
How it helps:
- Cleans messy data and combines it from different sources.
- Saves time by automating repeated steps.
- Reduces errors that happen with manual work.
Example:
If a business uses different accounting systems in three countries, Power Query can merge them into one consistent report ready for review.
4. Advanced Excel: The Heart of Financial Analysis
Even with new tools, Excel remains the most trusted tool in financial due diligence.
How experts use Excel:
- Build models for working capital and EBITDA adjustments.
- Run “what-if” scenarios to test different assumptions.
- Use pivot tables and macros to analyze large amounts of data quickly.
Example:
During a Quality of Earnings (QoE) review, Excel can show how removing one-time expenses changes the company’s true earning, giving investors a clearer picture of its real performance.
5. Power BI & AI: Turning Data into Insights
Power BI and AI tools (like ChatGPT) help present financial findings in a smart, visual, and easy-to-understand way.
Power BI creates interactive dashboards that show key financial trends.
AI can help draft reports, summarize data, and highlight potential risks.
Example:
Instead of sending long Excel sheets, a financial due diligence firm can share a Power BI dashboard showing sales by customer, region, or month, all interactive and real time.
6. The Human + Technology Advantage
While technology makes the process faster, people still matter the most. Experienced professionals use these tools to interpret results, explain what they mean, and give solid advice.
Outsourcing due diligence offers:
- Access to skilled experts who know both finance and technology.
- Flexibility to manage multiple deals at once.
- Lower costs compared to building an internal team.
7. How Windy Street Uses These Tools
At Windy Street, we combine financial expertise with modern technology to deliver clear, accurate, and timely financial due diligence reports.
We use:
- Strongbox to pull data directly from accounting systems.
- Power Query to clean and organize financial information.
- Advanced Excel to build detailed financial models.
- Power BI and AI to present insights visually and efficiently.
This mix of technology and human skill helps CFOs, investors, and business owners make confident decisions.
Conclusion: The Future of Transaction Advisory
Technology has changed financial due diligence forever.
With tools like Strongbox, Power Query, Advanced Excel, and AI, businesses can now complete due diligence faster, with greater accuracy and deeper insights.
By working with a tech-enabled due diligence firm, companies can identify risks, validate assumptions, and move deals forward confidently.
At Windy Street, we use the best technology and expertise to deliver reliable, insightful, and efficient due diligence services for businesses of all sizes.


