Childcare Providers
The Time-Space Percentage: The Most Valuable Tax Calculation for In-Home Childcare Providers
If you run a licensed family daycare from your home, the Time-Space Percentage could be the single biggest tax deduction you are not taking. Here is how to calculate it correctly.
If you run a licensed family daycare out of your home, you are sitting on one of the most powerful tax deductions available to any small business owner — and most providers either do not know about it or are calculating it wrong.
It is called the Time-Space Percentage, and it determines what portion of your home expenses you can deduct as a business cost.
What Is the Time-Space Percentage?
When you operate a family daycare from your home, your house serves a dual purpose: it is your personal residence and your place of business. The IRS allows you to deduct the business portion of shared home expenses — things like mortgage interest or rent, utilities, homeowner's insurance, repairs, and depreciation.
The Time-Space Percentage is the formula that determines what "business portion" means for you. It is calculated by multiplying two factors:
Time Percentage × Space Percentage = Time-Space Percentage
Let's break down each one.
Calculating Your Time Percentage
The time percentage measures how many hours per year your home is used for daycare, compared to total hours in the year.
Total hours in a year: 8,760
Hours used for daycare: This includes:
- All hours children are in your care
- Time you spend on daycare-related work while children are not present — meal prep, cleaning, record-keeping, planning activities, parent communication
- Time spent on business administration (billing, taxes, licensing paperwork)
Example:
- You provide care 10 hours per day, 5 days per week, 50 weeks per year = 2,500 hours
- You spend an additional 5 hours per week on prep and admin = 250 hours
- Total daycare hours: 2,750
Time Percentage: 2,750 ÷ 8,760 = 31.4%
Keep a log. The IRS can ask you to substantiate this number, and a contemporaneous record is far more defensible than a reconstruction from memory.
Calculating Your Space Percentage
The space percentage measures what portion of your home's square footage is used for daycare.
Here is where family daycare providers get a significant advantage over other home-based businesses: you can include any room that is regularly used for daycare, even if it is also used for personal purposes.
A home office deduction for a typical remote worker requires exclusive business use of the space. Family daycare is explicitly exempt from that rule under IRS Publication 587. Your living room, kitchen, playroom, and backyard all count — as long as children actually use them during care hours.
Example:
- Total home square footage: 1,800 sq ft
- Rooms regularly used for daycare (living room, kitchen, two bedrooms, bathroom, backyard patio): 1,200 sq ft
Space Percentage: 1,200 ÷ 1,800 = 66.7%
Putting It Together
Time-Space Percentage: 31.4% × 66.7% = 20.9%
That means you can deduct 20.9% of your shared home expenses as a business cost.
On a home with $24,000 in annual mortgage interest, utilities, insurance, and repairs, that is $5,016 in additional deductions — money that would otherwise be left on the table.
What Expenses Can You Apply It To?
The Time-Space Percentage applies to indirect expenses — costs that benefit both your personal and business use of the home:
- Mortgage interest or rent
- Utilities (electricity, gas, water, internet)
- Homeowner's or renter's insurance
- General repairs and maintenance
- Home depreciation (calculated separately but using the same percentage)
- Lawn care and snow removal
- Security system
Direct expenses — costs that are 100% for the daycare — are fully deductible without applying the percentage. Examples: a dedicated daycare bathroom renovation, a fence installed specifically for child safety, or a separate phone line for the business.
Common Mistakes to Avoid
Not tracking time carefully. The time percentage is where most providers undercount. Prep time, cleaning, and administrative work are all legitimate daycare hours. A simple daily log takes five minutes and can add thousands of dollars to your deduction.
Forgetting the exclusive-use exception. Many providers assume they cannot deduct their living room because the family also uses it. That is wrong for licensed family daycare. Document that children use the space regularly, and you are entitled to include it.
Skipping depreciation. Home depreciation is one of the largest deductions available, and it is frequently overlooked because it feels complicated. Your bookkeeper can help you calculate it correctly.
Recalculating every year. Your Time-Space Percentage should be recalculated annually, because your hours and the rooms you use may change from year to year.
A Note on CACFP Food Program Income
If you participate in the Child and Adult Care Food Program (CACFP), the reimbursements you receive are taxable income — but your food costs are deductible. You can deduct food costs for the children in your care using either actual costs (with receipts) or the standard meal rates published by the IRS. The standard rate method is simpler and often produces a larger deduction.
Do not net the two. Report the CACFP income in full, and take the food deduction separately.
Why This Matters for Texas Providers
Texas has no state income tax, which means your federal return is doing all the heavy lifting. Every dollar of legitimate federal deduction is worth more here than it would be in a state with a 5–9% income tax on top.
Getting the Time-Space Percentage right is not a minor detail — for many in-home providers, it is the difference between a profitable year and a year where you wonder why you are working so hard for so little.
The Bottom Line
The Time-Space Percentage is not complicated, but it does require consistent record-keeping throughout the year. A daily time log, a clear map of which rooms children use, and a bookkeeper who understands family daycare can make this calculation straightforward — and make sure you are not leaving money on the table come tax season.
If you are a licensed family daycare provider in Texas and you are not sure whether you are calculating this correctly, let's talk. This is exactly the kind of thing we help care-based businesses get right.