83-125: Business Income Apportionment Schedule (2024)
Mississippi · Mississippi DOR · Used for tax years 2024
Mississippi Form 83-125 is the 2024 Business Income Apportionment Schedule. It compares Mississippi property, payroll and sales with totals everywhere and applies the formula for the business type to calculate an apportionment ratio for Form 83-122, line 19.
What you'll need
To complete the schedule, have the following information ready:
- Your federal employer identification number (FEIN).
- Mississippi and everywhere property values at the beginning and end of the taxable year.
- Annual rental property amounts.
- Mississippi and everywhere payroll and sales totals.
For airlines, motor carriers, express companies, and telephone and telegraph companies, the form requires a special formula and an attached schedule.
Common mistakes
- Do not select more than one formula in Part II. The form says to check one.
- Do not overlook rounding. Part II says to round to four decimal places.
- Do not leave the final ratio only on this schedule. The form directs you to enter it on Form 83-122, line 19.
- If using the special formula on line 7, remember to attach a schedule.
- Major medical or pharmaceutical suppliers should follow the form's direction to see the instructions for Form 83-100.
Questions people ask
What goes in columns A, B, and C?
Column A is for total Mississippi amounts, column B is for total everywhere amounts, and column C is for the Mississippi ratio.
How do I calculate average net book value of assets?
Add the beginning-of-year and end-of-year property amounts on lines 1a and 1b. Enter the total on line 1c, then divide it by two for line 1d.
How is rental property included?
Line 1e asks for annual rental property multiplied by eight. Add that amount to line 1d to get the total on line 1f.
How do I calculate the Mississippi factors in Part I?
For the property factor, divide line 1f, column A by line 1f, column B. For the payroll and sales factors, divide column A by column B on lines 2 and 3, respectively.
Where does the final apportionment ratio go?
Part II directs you to enter the resulting ratio on Form 83-122, line 19.