Home office expense categories: what to separate before filing

This guide is for sole proprietors, freelancers, gig workers, independent contractors, hairdressers, barbers, drivers, sellers, creators, consultants, and side hustlers who use part of their home for business and want cleaner records before tax prep.

You do not need to become a tax expert. You just need to stop mixing every home-related cost into one pile called "home office" when the records may need to be reviewed in different ways.

Important: Koody is a budgeting and record-prep app, not a tax filing service, tax advisor, accountant, tax preparer, or law firm. Use Koody to organize transactions, categories, receipts, notes, splits, imports, and exports. A qualified tax professional should decide final tax treatment, home office eligibility, method choice, and filing details.

What to separate before filing

A home office record is not just "rent" or "utilities." It is a set of records that helps someone review four basic questions:

What part of the home was used for business?
Which costs were only for that business area?
Which costs were shared by the whole home?
Which costs were personal-only and should stay out of the business record?

IRS Publication 587 uses three plain categories for actual home expenses: direct, indirect, and unrelated. Those words sound formal, but the idea is simple.

Direct expenses belong to the office area. Indirect expenses belong to the whole home and may need a business-use percentage. Unrelated expenses belong only to personal areas.

Direct home office expenses

What are direct home office expenses?

Direct home office expenses are costs only for the business part of your home. If the cost would not exist without that office area, keep it separate.

Examples:

Painting only the office.
Repairing a window only in the office.
Installing shelves only in the office.
Fixing flooring only in the office.
Buying a light fixture only for the office.

In Koody, you can categorize these as Home Office or Business Repairs & Maintenance, attach the receipt, and add a note such as "office wall repair" or "shelving for workroom."

The note matters because a hardware store charge by itself does not say whether the paint went on the home office wall, the living room wall, or a bedroom.

Shared home expenses

What are indirect home office expenses?

Indirect home office expenses are shared costs that keep the whole home running. They are not only for the office, but part of them may relate to business use.

Common examples include:

Rent.
Electricity.
Gas.
Water.
Trash removal.
Internet.
Home insurance.
Security monitoring.
Cleaning services.
General repairs that benefit the whole home.

These are the costs that usually need measurements and review. For example, a utility bill covers the whole home. The business record needs enough information to review what part, if any, relates to the office area.

Koody can help by keeping those bills in clear categories such as Home Office, Business Utilities, Rent, or Business Repairs & Maintenance. You can attach the bill, add a note, and split one transaction across personal and business categories when only part of the cost belongs with business records.

Personal-only home costs

What costs should stay out of home office records?

Some home costs are personal-only. If the cost only helps a part of the home that is not used for business, keep it out of the home office record.

Examples:

Painting a bedroom that is not used for business.
Repairing a personal bathroom.
Buying furniture for a living room.
Lawn care that has nothing to do with the business area.
Decorating personal spaces.

This is where mixing causes confusion. A single trip to a home improvement store might include office shelves, kitchen supplies, and paint for a bedroom. If one receipt has both business and personal items, split the transaction and add a note.

Keep bills, receipts, and notes with the transaction.

Koody lets you attach receipts, invoices, screenshots, and notes to the matching row, so a home office repair or utility bill does not become a mystery later.

Track home office records

Simplified method vs actual expenses

What is the difference between the simplified method and actual expenses?

The IRS gives two broad ways to figure business use of home expenses: the simplified method and actual expenses.

The simplified method uses square footage. In many cases, it is easier because it does not require you to add up the same home bills in as much detail for the home office calculation.

The actual expense method uses real costs. That means you need stronger records for rent, utilities, repairs, insurance, measurements, dates, and other home costs.

Koody does not choose the method for you. That choice can affect the tax return, depreciation, carryovers, and later review. Use Koody to keep the records organized, then let a qualified tax professional make the final call.

What records do I need for home office expenses?

Before tax prep, gather the records someone would need to understand the home office area and the bills behind it.

Keep:

The square footage of the office area.
The total square footage of the home.
The dates you used the space for business.
Rent records or mortgage-related records.
Utility bills.
Insurance records.
Repair and maintenance receipts.
Internet or phone records, when relevant.
Photos or notes that show what the space was used for.
Notes for mixed purchases or shared bills.

This does not mean every record belongs on the return. It means you have enough organized information for review.

For bank statements, receipts, and proof questions, we also have a guide on using bank statements instead of receipts for business expenses.

Import, review, split, and export cleaner records.

If the home office bills already live in bank or card history, import the CSV into Koody. Koody can auto-categorize the rows, then you can attach proof, add notes, split mixed costs, and export cleaner records for review.

Open Koody

How Koody helps before tax prep

Koody helps with the record prep around home office expenses:

Keep home office costs separate while still managing personal and business finances in one place.
Keep Business Utilities, Rent, Business Repairs & Maintenance, and Home Office rows easy to review.
Attach receipts, bills, PDFs, screenshots, and notes to the matching transaction.
Split one charge between personal and business categories when a receipt is mixed.
Import bank and card CSVs when you need to catch up.
Let Koody auto-categorize obvious rows, then review the home office items that need context.
Export filtered records for accountant, tax preparer, or bookkeeper review.

Koody is especially useful when you want to manage household money and sole proprietor records in the same app. Your rent, utilities, groceries, owner draws, client payments, and business purchases can live in one place without pretending they are all the same kind of transaction.

FAQs

1. What are home office expense categories?

Home office expense categories are groups of records used to review business use of part of your home. The main groups are direct expenses for the office area, shared home expenses, personal-only expenses, and measurements that show the business-use percentage.

2. What are direct home office expenses?

Direct home office expenses are costs that apply only to the business part of your home, such as painting or repairing only the office area. They should be kept separate from shared household bills.

3. What are indirect home office expenses?

Indirect home office expenses are shared home costs that benefit the whole home, such as rent, utilities, insurance, security, cleaning, and general repairs. They usually need a business-use percentage before review.

4. Can I deduct rent or utilities for a home office?

Rent and utilities may be part of home office records when part of the home is used for business, but the final tax treatment depends on your facts and method. Keep the bills, dates, notes, and measurements for review.

5. What is the difference between the simplified method and actual expenses?

The simplified method uses a square-foot calculation. The actual expense method uses real home costs, such as rent, utilities, repairs, insurance, and other records. A qualified tax professional should help decide which method fits your situation.

6. What records should I keep for home office expenses?

Keep office square footage, total home square footage, dates the space was used for business, rent or mortgage records, utility bills, repair receipts, insurance records, photos, notes, and any files that explain business use.

7. What does Koody help with before tax prep?

Koody helps organize transactions, categories, receipts, files, notes, splits, imports, and exports before review. A qualified tax professional should decide final tax treatment.

Sources: IRS references used

Sources accessed June 8, 2026. Koody is not a tax filing service or tax advisor.