Tax form data extraction for W-2s, 1099s, 1040s and business returns
Every box and line, pulled from one packet and checked across the forms. Your team reviews the exceptions, not the returns.
- 99% field-level accuracy on 250+ document types
- 95%+ of documents processed straight through
- SOC 2 Type 2, HIPAA and GDPR
- Taxpayers
- Elena & David Ruiz99%
- Filing status
- Married filing jointly99%
- Wages, line 1a
- $136,500.0099%
- S corp income, Sch. E
- $103,000.0098%
- Sch. C gross receipts
- $41,300.001099s total $46,800
Trusted by 10,000+ mid-sized and enterprise teams, including
- Grid Finance
- Hitachi
- PayU
Who uses it
Mortgage and consumer lending
W-2 wages and 1040 income, read and checked against each other before underwriting.
Business and SBA lending
1120-S, 1065 and K-1 figures for owners and the companies they own.
Accounting and tax firms
Client W-2s, 1099s and K-1s read box by box at tax season, without re-keying.
Vendor onboarding and AP
W-9 names, tax classifications and TINs captured as vendors sign up.
The W-2 says one thing. Does the 1040 agree?
Pick a form to see what Docsumo reads from it and what it's checked against.
Individual and wage forms
Business returns
Form W-2: Wage and Tax Statement
Employers send one to each employee every January.✓ 3 passedWages one employer paid one employee in the tax year, and the taxes withheld from them.
What Docsumo reads
- Employee, box e
- Elena M. Ruiz
- Employee's SSN, box a
- XXX-XX-4127
- Employer, box c
- Front Range Dental Group PC
- Employer EIN, box b
- 84-3150792
- Wages, box 1
- 136,500.00
- Federal tax withheld, box 2
- 24,180.00
- Social security wages, box 3
- 160,000.00
- 401(k) deferrals, box 12a code D
- 23,500.00
Checked against
- Form 1040Box 1 against wages on line 1a✓ 136,500 on both
- Form 1040Box 2 against withholding on line 25a✓ 24,180 on both
- ItselfBox 3 against box 1 plus the 401(k) deferrals✓ Adds up
SSNs shown truncated. Field names and the output schema are configurable.
Forms 1098, 941, W-4, 4506-C and 4506-T, 8821, 2848 and 4868, IRS tax return transcripts and state returns are read the same way. You choose the checks for each workflow; cross-document validation is on the Enterprise plan. An exception is a question, not a verdict: a 1099 can cover work booked in another year. Qualifying income is worked out under income verification, and business returns are spread under financial spreading.
One packet in, every form out, checked.
- 01
Collect
By email, upload or API: one form or the whole packet.
Collection agent - 02
Classify and split
Pages sorted by form, so a 38-page PDF becomes nine forms.
Classification agent - 03
Extract
Every box and line, each with a confidence score.
Extraction agent - 04
Verify
Forms checked against each other and your rules.
Verification agent
- W-2Front Range Dental Group PC
- 1099-NEC × 2Alpine Outfitters, Cherry Creek Realty
- Form 1040Elena M. & David J. Ruiz
- Schedule 1Additional income
- Schedule CRuiz Design Studio
- Schedule ES corporation income
- Schedule K-1Elena M. Ruiz · 25%
- Form 1120-SFront Range Dental Group PC
What changes when tax forms stop waiting on people.
“We often have to process a lot of data coming from unstructured data stored in PDF forms like tax returns, bank statements, and invoices. … DocSumo is helpful for speeding that process up significantly, as well as monitoring and improving accuracy.”
Box-level data where your team already works.
Each form arrives as JSON in the system you decide in, with the controls your security review will ask about.
SOC 2 Type 2Independently audited controls- ISO 27001Certified security management
HIPAAFor protected health data
GDPRFor EU personal data
Encrypted with TLS in transit and AES-256 at rest. Your documents are not used to train shared or third-party models.
How Docsumo protects your data →// POST https://your-system.example.com/hooks/docsumo { "meta_data": { "title": "ruiz-2025-return.pdf · Form 1040" }, "data": { "Basic Information": { "Last Name": { "value": "Ruiz", "confidence": 0.99 } }, "Finance": { "1a": { "value": 136500.00, "confidence": 0.99 }, "8": { "value": 127650.00, "confidence": 0.99 }, "9": { "value": 264150.00, "confidence": 0.98 } } } // 8 more forms from this packet }
Your system of record
Forms in by email, upload or API; checked data out to your LOS, practice system or warehouse.
A test environment
Your engineers validate changes before they reach production.
Audit log and permissions
By role, team and document type. Every review and approval recorded.
What teams ask about tax form data extraction.
What is tax form data extraction?
Tax form data extraction turns IRS forms into structured data, box by box and line by line, so nobody keys them in. Docsumo is an intelligent document processing platform: it splits a mixed tax packet into its forms (W-2s, 1099s, Form 1040 and its schedules, W-9s, and business returns such as the 1120-S, 1065 and K-1s), extracts every box and line with a confidence score, and checks the forms against each other, so wages, 1099 income and K-1 figures that don't match are flagged before anyone opens the file.
Which IRS forms can Docsumo extract?
W-2s; 1099-NEC, MISC, INT, DIV, R and G; Form 1040 with Schedules 1, A, C, D and E, and the 1040-X; business returns (Form 1120, 1120-S and 1065, with their K-1s); and W-9, W-4, 1098, 941, 4506-C, 4506-T, 8821, 2848 and 4868, IRS tax return transcripts and state returns. Other forms can be set up as your own document types.
Can Docsumo extract data from 1099 forms?
Yes. Docsumo reads the 1099-NEC, MISC, INT, DIV, R and G box by box, with the payer and recipient names and TINs, from scans or PDFs, one form or a whole batch. With cross-document validation, 1099 totals can be checked against Schedule C and each recipient's TIN against the W-9 on file.
Can Docsumo process a whole tax return packet at once?
Yes. Upload the packet as one PDF and Docsumo sorts the pages by form, so a return with its schedules, W-2s, 1099s and K-1s becomes separate documents, each with every box and line extracted. Auto-classification and splitting are on the Business plan.
How are tax forms checked against each other?
With rules you configure under cross-document validation, on the Enterprise plan: W-2 wages against Form 1040 line 1a, 1099-NEC totals against Schedule C gross receipts, a K-1 against the entity return's income and allocation percentage, and names, TINs and tax years across the packet. A failed rule sends the file to review with both values side by side.
How accurate is extraction on scanned tax forms?
Docsumo reaches 99% field-level accuracy in production on 250+ document types, and reads scanned and digital forms alike. Every field carries a confidence score; fields below the threshold you set for that field go to a reviewer, who clicks the value to see the line it came from.
Is it safe to upload tax returns that contain SSNs?
Docsumo is SOC 2 Type 2 audited, ISO/IEC 27001:2022 certified, and HIPAA and GDPR compliant. Documents are encrypted with TLS in transit and AES-256 at rest, and are not used to train shared or third-party models. Access is set by role, team and document type, and every review and approval is recorded in an audit log.
What is Form 4506-C?
Form 4506-C is the IRS form a taxpayer signs so that an authorized lender can get their tax transcripts through the IRS Income Verification Express Service (IVES). Lenders compare the transcript with the return in the file. Docsumo reads the 4506-C and IRS transcripts like any other form.
Can we try it on our own tax forms?
Yes. Start a free trial with 1,000 pages for 14 days, or book a demo and bring a real packet: we run it live and show every box, every check and every exception.
Bring a real tax packet to the demo.
A scanned return with its schedules, W-2s, 1099s and K-1s. We run it live and show every box, every check and every exception.