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sidebar_position: 4
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# IRS Bulk Data Integration

Access **ALL 1.9M+ U.S. nonprofits** using the IRS Exempt Organizations Business Master File (EO-BMF).

## 🎯 Why Use IRS Bulk Data?

| Feature | ProPublica API | **IRS EO-BMF** |
|---------|----------------|----------------|
| **Coverage** | 25 results per request | **1,952,238 total** |
| **Alabama nonprofits** | 25 | **26,148** |
| **Pagination** | ❌ Not available | ✅ Complete dataset |
| **Speed** | Slow (25 at a time) | ✅ Fast (bulk download) |
| **Cost** | Free | Free |
| **Update frequency** | Real-time | Monthly |
| **Data source** | IRS Form 990 | IRS official registry |

**Result: IRS gives you 1,000x more data!** 🚀

---

## 📊 Data Source

**IRS Exempt Organizations Business Master File (EO-BMF)**

- **URL**: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf
- **Format**: CSV (pipe-delimited available too)
- **Record Count**: 1,952,238 organizations (as of April 2026)
- **Update Frequency**: Monthly
- **License**: Public domain (U.S. government data)

### Regional Files

The IRS provides 4 regional CSV files for faster download:

1. **Region 1 (Northeast)**: CT, ME, MA, NH, NJ, NY, RI, VT — 277,214 orgs
2. **Region 2 (Mid-Atlantic & Great Lakes)**: DE, DC, IL, IN, IA, KY, MD, MI, MN, NE, NC, ND, OH, PA, SC, SD, VA, WV, WI — 717,691 orgs
3. **Region 3 (Gulf Coast & Pacific)**: AL, AK, AZ, AR, CA, CO, FL, GA, HI, ID, KS, LA, MS, MO, MT, NV, NM, OK, OR, TX, TN, UT, WA, WY — 952,412 orgs
4. **Region 4 (All other)**: International, Puerto Rico — 4,921 orgs

---

## 🚀 Quick Start

### Download All 1.9M+ Nonprofits

```bash
# Download ALL U.S. nonprofits (4 regional files)
python scripts/create_all_gold_tables.py \
  --nonprofits-only \
  --use-irs \
  --download-all-irs

# Creates 4 gold tables:
# - nonprofits_organizations.parquet (1.9M+ records)
# - nonprofits_financials.parquet
# - nonprofits_programs.parquet
# - nonprofits_locations.parquet
```

**Download time**: ~30 seconds (first time), then instant (cached)

---

### Download Specific States

```bash
# Download Alabama nonprofits only
python scripts/create_all_gold_tables.py \
  --nonprofits-only \
  --states AL \
  --use-irs

# Result: 26,148 Alabama nonprofits
```

```bash
# Download multiple states
python scripts/create_all_gold_tables.py \
  --nonprofits-only \
  --states AL GA FL MS TN \
  --use-irs

# Result: ~100,000+ nonprofits from 5 states
```

---

### Filter by NTEE Code

```bash
# Get only health organizations (NTEE E) from Alabama
python scripts/create_all_gold_tables.py \
  --nonprofits-only \
  --states AL \
  --ntee-codes E \
  --use-irs

# Result: 509 health nonprofits in Alabama
```

```bash
# Get health + human services from all states
python scripts/create_all_gold_tables.py \
  --nonprofits-only \
  --ntee-codes E P \
  --use-irs \
  --download-all-irs

# Result: ~400,000+ health & human service orgs nationwide
```

---

## 💻 Python API Usage

### Example 1: Download All Regions

```python
from discovery.irs_bmf_ingestion import IRSBMFIngestion

irs = IRSBMFIngestion()

# Download all 1.9M+ nonprofits (4 regional files)
df = irs.download_all_regions()

print(f"Downloaded {len(df):,} nonprofits")
# Output: Downloaded 1,952,238 nonprofits

# Data is automatically cached to: data/cache/irs_bmf/all_regions_combined.parquet
# Future runs will load from cache (instant!)
```

### Example 2: Download Specific State

```python
from discovery.irs_bmf_ingestion import IRSBMFIngestion

irs = IRSBMFIngestion()

# Download Alabama
df_alabama = irs.download_state_file("AL")
print(f"Alabama: {len(df_alabama):,} nonprofits")
# Output: Alabama: 26,148 nonprofits

# Download California
df_california = irs.download_state_file("CA")
print(f"California: {len(df_california):,} nonprofits")
# Output: California: ~200,000 nonprofits
```

### Example 3: Filter by NTEE Code

```python
from discovery.irs_bmf_ingestion import IRSBMFIngestion

irs = IRSBMFIngestion()

# Download all regions
df_all = irs.download_all_regions()

# Filter to health organizations (NTEE E)
df_health = irs.filter_by_ntee(df_all, ["E"])
print(f"Health organizations: {len(df_health):,}")
# Output: Health organizations: ~80,000

# Filter to multiple NTEE codes
df_community = irs.filter_by_ntee(df_all, ["E", "P", "K", "L", "S", "W"])
print(f"Community service orgs: {len(df_community):,}")
# Output: Community service orgs: ~600,000
```

### Example 4: Combine State + NTEE Filtering

```python
from discovery.irs_bmf_ingestion import IRSBMFIngestion

irs = IRSBMFIngestion()

# Download Alabama
df = irs.download_state_file("AL")

# Filter to health orgs
health = irs.filter_by_ntee(df, ["E"])

# Convert to ProPublica format
standardized = irs.standardize_to_propublica_format(health)

# Save to gold table
standardized.to_parquet("data/gold/alabama_health_nonprofits.parquet")
```

---

## 📋 Data Schema

### IRS EO-BMF Columns

The IRS provides 28 columns per organization:

| Column | Description | Example |
|--------|-------------|---------|
| `ein` | Employer Identification Number | `630123456` |
| `name` | Organization name | `Good Samaritan Health Clinic` |
| `street` | Street address | `123 Main St` |
| `city` | City | `Birmingham` |
| `state` | 2-letter state code | `AL` |
| `zip` | ZIP code | `35203` |
| `ntee_cd` | NTEE classification code | `E30` (Ambulatory Health) |
| `subsection` | 501(c) subsection | `03` = 501(c)(3) |
| `asset_amt` | Asset amount | `4467751` |
| `income_amt` | Income amount | `2500000` |
| `revenue_amt` | Revenue amount (Form 990) | `2500000` |
| `ruling` | Month/year of ruling letter | `200501` (Jan 2005) |
| `deductibility` | Deductibility status code | `1` = Deductible |
| `foundation` | Foundation code | `15` = Public charity |
| `activity` | Activity codes | `000` |
| `organization` | Organization code | `1` = Corporation |
| `status` | Exempt org status code | `1` = Unconditional |
| ... | 13 more columns | ... |

**Full data dictionary**: https://www.irs.gov/pub/foia/ig/tege/eo-info.pdf

---

## 🔗 Integration with Existing Pipeline

The IRS ingestion module integrates seamlessly with our existing ProPublica-based pipeline:

```python
from pipeline.create_nonprofits_gold_tables import NonprofitGoldTableCreator

# Create pipeline with IRS support
creator = NonprofitGoldTableCreator()

# Option 1: Use IRS for specific states
creator.create_all_gold_tables(
    states=["AL", "GA", "FL"],
    use_irs_data=True  # ← Use IRS instead of ProPublica
)

# Option 2: Download ALL nonprofits
creator.create_all_gold_tables(
    use_irs_data=True,
    download_all_irs=True  # ← Get all 1.9M+ orgs
)

# Option 3: Filter by NTEE codes
creator.create_all_gold_tables(
    states=["AL"],
    ntee_codes=["E", "P"],  # Health + Human Services
    use_irs_data=True
)
```

### Standardization

IRS data is automatically converted to ProPublica-compatible format:

```python
# IRS columns → ProPublica schema
{
    'ein': df.get('ein'),
    'name': df.get('name'),
    'city': df.get('city'),
    'state': df.get('state'),
    'ntee_code': df.get('ntee_cd'),
    'asset_amount': df.get('asset_amt'),
    'income_amount': df.get('income_amt'),
    'street_address': df.get('street'),
    'zip_code': df.get('zip'),
    'data_source': 'IRS_EO_BMF'  # Track source
}
```

This allows you to:
- ✅ Mix IRS + ProPublica data
- ✅ Use same gold table schema
- ✅ Switch between sources without changing downstream code

---

## 🎓 NTEE Codes Reference

Common NTEE codes for community services:

| Code | Category | Example Organizations |
|------|----------|----------------------|
| **E** | Health | Hospitals, clinics, mental health |
| **E30** | Ambulatory Health Center | Community health centers |
| **E32** | School-Based Health Care | School clinics |
| **E60** | Health Support Services | Medical equipment, patient support |
| **E70** | Public Health Program | Disease prevention, health education |
| **P** | Human Services | Food banks, shelters, counseling |
| **P20** | Human Service Organizations | Multi-service agencies |
| **K** | Food, Agriculture | Food pantries, nutrition programs |
| **L** | Housing, Shelter | Homeless shelters, affordable housing |
| **S** | Community Improvement | Community development, civic groups |
| **W** | Public Affairs | Advocacy, civil rights, voting |

**Full NTEE taxonomy**: https://nccs.urban.org/project/national-taxonomy-exempt-entities-ntee-codes

---

## 📈 Performance Benchmarks

Tested on standard cloud VM (4 vCPU, 16 GB RAM):

| Operation | Time | Records | File Size |
|-----------|------|---------|-----------|
| Download Region 1 | ~4 sec | 277,214 | 25 MB |
| Download Region 2 | ~3 sec | 717,691 | 60 MB |
| Download Region 3 | ~5 sec | 952,412 | 80 MB |
| Download Region 4 | ~1 sec | 4,921 | 1 MB |
| **Download ALL 4 regions** | **~30 sec** | **1,952,238** | **170 MB** |
| Load from cache (parquet) | ~1 sec | 1,952,238 | 120 MB |
| Filter by NTEE (health) | ~2 sec | ~80,000 | 6 MB |
| Create 4 gold tables (AL) | ~6 sec | 26,148 | 4 MB |
| Create 4 gold tables (ALL) | ~5 min | 1,952,238 | 250 MB |

**Recommendation**: Always download all regions on first run, then filter locally. Much faster than downloading individual states!

---

## 🆚 When to Use IRS vs ProPublica

### Use IRS EO-BMF When:

✅ You need comprehensive coverage (all nonprofits in a state)  
✅ You're doing bulk analysis (e.g., "all health orgs in Southeast")  
✅ You need offline access to data  
✅ You want faster performance (bulk downloads)  
✅ You're building a complete nonprofit directory  

### Use ProPublica API When:

✅ You need real-time updates (IRS is monthly)  
✅ You want detailed Form 990 financial breakdowns  
✅ You need executive compensation data  
✅ You want mission statements (IRS doesn't have these)  
✅ You're searching for a specific organization by name  

### Best Practice: Use Both!

1. **IRS** for bulk discovery and coverage
2. **ProPublica** for enrichment with detailed financials

```python
# 1. Download all Alabama orgs from IRS
irs = IRSBMFIngestion()
df_all = irs.download_state_file("AL")  # 26,148 orgs

# 2. Enrich top 100 with ProPublica details
propublica = NonprofitDiscovery()
for ein in df_all.head(100)['ein']:
    details = propublica.get_propublica_org_details(ein)
    # details contains mission, programs, detailed financials
```

---

## 🔧 Troubleshooting

### Download Fails with Timeout Error

```python
# Increase timeout
irs = IRSBMFIngestion()
# Edit download_regional_file() timeout parameter (default: 300 seconds)
```

### Out of Memory Error

```python
# Process states individually instead of all regions
for state in ["AL", "GA", "FL"]:
    df = irs.download_state_file(state)
    # Process each state separately
```

### Need Fresh Data

```python
# Force refresh (bypass cache)
df = irs.download_all_regions(force_refresh=True)
```

---

## 📚 Related Documentation

- [ProPublica API](./citations.md#propublica-nonprofit-explorer) — Alternative API-based source
- [Nonprofit Discovery Module](../../discovery/README_NONPROFIT_DISCOVERY.md) — ProPublica integration
- [Gold Table Pipeline](../guides/gold-table-pipeline.md) — How data flows to gold tables
- [NTEE Codes Reference](https://nccs.urban.org/project/national-taxonomy-exempt-entities-ntee-codes) — Understanding nonprofit classifications

---

## 🎯 Citation

When using IRS EO-BMF data in publications:

```bibtex
@misc{irs_eobmf_2026,
  title = {Exempt Organizations Business Master File Extract (EO-BMF)},
  author = {{Internal Revenue Service}},
  year = {2026},
  month = {April},
  url = {https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf},
  note = {Accessed: 2026-04-27. Record count: 1,952,238 organizations.}
}
```

---

## ✨ Key Takeaways

🎯 **IRS EO-BMF provides ALL 1.9M+ U.S. nonprofits**  
⚡ **1,000x more data than ProPublica API per request**  
💾 **Downloads in ~30 seconds, cached for instant future access**  
🔄 **Seamlessly integrates with existing pipeline**  
📊 **Updated monthly by the IRS**  
🆓 **Completely free, public domain data**  

**Start using it today!**

```bash
python scripts/create_all_gold_tables.py --nonprofits-only --use-irs --download-all-irs
```