A weekly planner isn’t just great for jotting down appointments. It can also serve as supporting documentation if the IRS were to ever audit your return. The U.S. Tax Court often makes it clear in case decisions that the burden of proof falls on the taxpayer claiming the deductions and credits. In the event of an audit, any unsubstantiated deduction will result in a higher tax bill.
But what should be written down? Even if you use third-party payment companies, such as Square, and pay for every expense with your debit card, it’s still beneficial to write down every sale and major expense to avoid discrepancies.
If you drive to clients’ homes or to any other business destination, it’s important to log in your mileage and destination to prove you are entitled to take the mileage deduction.
In a recent court case, a taxpayer’s mileage claim was disallowed after he was unable to back up his business mileage. Although he had a log of miles driven, he did not make it clear if the miles were for business or personal use. Writing down the purpose of the business trip could prevent a future disallowance.
Aside form helping you prepare an accurate tax return, a weekly planner can also help you manage your customer relationships. If you’re looking for recurring sales, knowing the date of your last visit can show your clients you haven’t forgotten them.