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Part One: The Tax Organizer 33
Your Time-Space Percentage
1) If you have no entries in column (J):
Enter the amount from line (K) on Form 8829, line 1.
Enter the amount from line (M) on Form 8829, line 2.
2) If you have any entries in column (J), you have one or more rooms that are used
exclusively for your business. Calculate your Time-Space percentage for these
rooms as follows:
Enter the amount on line (J) __________
Enter the amount on line (M) __________
Divide (J) by (M) = __________% (N) Space percentage for exclusive-use rooms
Enter the amount on line (K) __________
Enter the amount on line (M) __________
Divide (K) by (M) = __________% (O) Space percentage for regularly used rooms
Enter the amount from line (G) or (I) = __________ (P)
Enter the total number of hours in the year from Form 8829, line 5* ______ (Q)
Divide (P) by (Q) = __________ (R) Time percentage for regularly used rooms
Multiply:
(O) __________
x (R) __________
=
__________ (S) Time-Space percentage for regularly used rooms
Add: (N) __________
+ (S) __________
=
__________ (T) Final Time-Space percentage
Enter the Final Time-Space percentage (T) amount on Form 8829, line 7.
Do not fill in lines 1–6. Attach a copy of these calculations to Form 8829.
*If you weren’t in business as of January 1 of last year, enter the number of hours in the year from the
day you started your business until December 31 of last year.
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