Quick Answer
A tax form reports what the account did during the year. Cost basis starts with what the customer paid, and required adjustments turn it into adjusted basis. An optional withholding election can be followed, but required withholding cannot be waived.
What Purpose Do Tax Forms Serve?
A tax form tells the customer and the taxing authority what the account did during the year, so that each can compute gain, loss, and income from the same figures. The firm reports; the customer files. Cost basis is one of the figures a form carries, not the form itself.
| Item | Role in tax reporting |
|---|---|
| Tax form | Organizes and reports tax information |
| Cost basis | Supplies an amount used when reporting an investment's tax result |
| Adjusted basis | Reflects required increases or reductions to the starting basis |
How Do Cost Basis and Adjusted Basis Work?
The starting rule is simple: a property's basis is generally its cost. Tax rules can later require adjustments for capital-account items. After those changes, the result is adjusted basis.
| Term | Meaning |
|---|---|
| Cost basis | The property's starting cost, unless another tax rule provides a different basis |
| Basis adjustment | A required increase or reduction for an applicable capital-account item |
| Adjusted basis | Starting basis after all required adjustments |
How Do Optional and Required Withholding Differ?
The classification depends on whether the customer has a choice.
| Withholding type | Customer choice | Operational treatment |
|---|---|---|
| Optional withholding | The facts permit an election | Follow the valid election where withholding is permitted |
| Required withholding | The facts require withholding | Apply withholding even if the customer prefers otherwise |
Exam Tip: Gotchas
A customer instruction does not turn required withholding into optional withholding. Ask first whether the facts permit an election. Only then does the customer's choice control the operational treatment.
What Should You Check on Exam Day?
- Identify the tax-reporting purpose of the form.
- Start basis with cost, then apply any required adjustment.
- Separate an available withholding election from a mandatory withholding requirement.