Can I combine 12 monthly bank export files into one annual transaction dataset for a client?

Yes — this is one of the most straightforward use cases. Upload all 12 monthly files and enable 'Include source file name.' If files are named with the month (e.g. 'chase-jan-2024.xlsx'), each transaction row is tagged with its month for period filtering and annual totaling.

What if a client's expense tracker has different columns than their bank export?

Deliteful outputs the column union — all columns from both files appear in the output. Rows from the bank export get empty cells for expense-tracker-specific columns and vice versa. All data is preserved in the combined sheet.

Does the combined output work with tax software import features?

The output is a clean flat .xlsx. Whether it matches your specific tax software's import schema depends on that software's requirements. The combined sheet is typically most useful as a working dataset for categorization before importing into tax software.

Can I process files from multiple clients in one job?

Technically yes, but it's cleaner to process each client separately to avoid cross-client data mixing. Use one job per client and enable 'Include source file name' within that job to distinguish accounts or entities for that client.

Consolidate Income and Expense Excel Sheets Into One File for Tax Preparation

Tax preparers and CPAs collecting financial data from clients often receive income statements, expense trackers, and transaction exports as separate Excel files covering different accounts, entities, or months. Getting all of that into one consolidated dataset before beginning the return is a prerequisite. Deliteful's Excel Combine Sheets tool handles that consolidation without manual copy-paste.

Create free account

A self-employed client might send monthly bank transaction exports (12 files), a separate expense tracker, and income sheets from two different freelance platforms — each formatted differently. A small business client with two entities might send separate P&L workbooks for each. In both cases, the first step before any tax analysis is stacking everything into one dataset. Doing this manually for 20 clients across tax season is a significant and error-prone time drain.

Deliteful reads first-row headers from every sheet across all uploaded workbooks and outputs the column union in one combined worksheet. Tag rows with their source filename — encoding the account or entity — and every transaction retains its origin for Schedule C categorization, entity-level reporting, or audit documentation. The clean flat output is ready for import into your tax software or further analysis in Excel.

How it works

1
Collect client financial files
Gather all .xlsx or .xls exports — bank transactions, expense trackers, income statements — from one or multiple clients.
2
Upload all files to Deliteful
Drop everything in at once; multiple workbooks and multiple sheets per workbook are all combined in one job.
3
Enable source tracking
Turn on 'Include source file name' so every transaction row retains its account or entity identifier for categorization.
4
Download and begin your tax analysis
Import the consolidated sheet into your tax software, apply category filters, or use it as the source for Schedule C or entity-level reporting.

Frequently asked questions

Can I combine 12 monthly bank export files into one annual transaction dataset for a client?: Yes — this is one of the most straightforward use cases. Upload all 12 monthly files and enable 'Include source file name.' If files are named with the month (e.g. 'chase-jan-2024.xlsx'), each transaction row is tagged with its month for period filtering and annual totaling.
What if a client's expense tracker has different columns than their bank export?: Deliteful outputs the column union — all columns from both files appear in the output. Rows from the bank export get empty cells for expense-tracker-specific columns and vice versa. All data is preserved in the combined sheet.
Does the combined output work with tax software import features?: The output is a clean flat .xlsx. Whether it matches your specific tax software's import schema depends on that software's requirements. The combined sheet is typically most useful as a working dataset for categorization before importing into tax software.
Can I process files from multiple clients in one job?: Technically yes, but it's cleaner to process each client separately to avoid cross-client data mixing. Use one job per client and enable 'Include source file name' within that job to distinguish accounts or entities for that client.

Create your free Deliteful account with Google and consolidate your client financial Excel files into one clean dataset before tax season crunch.