Donor-Advised Funds and Charitable Donation Strategies for Small Business Owners

Charitable giving creates tax deductions, but the details matter. Cash donations to public charities are deductible up to 60% of AGI. Appreciated stock donations avoid capital gains tax entirely and are deductible at fair market value (up to 30% of AGI). Donor-advised funds allow a large lump-sum deduction in a high-income year with grants distributed to charities over many years. For business owners with variable income, the timing and form of charitable contributions can produce significantly different tax outcomes.

How does the bunching strategy work?

What are the deduction limits for charitable contributions by businesses?

C-Corporations can deduct charitable contributions up to 10% of taxable income (computed before the deduction, NOL carrybacks, and certain other items), with excess contributions carried forward for 5 years. Sole proprietors, partners, and S-Corp shareholders deduct charitable contributions on their personal returns, subject to limits based on the type of property donated and the type of recipient: cash to public charities is limited to 60% of AGI, appreciated capital gain property to public charities is limited to 30% of AGI, and contributions to private foundations face lower limits. Donating appreciated property held more than one year (such as stock) lets you deduct the full fair market value while avoiding the capital gains tax you would owe if you sold it first. A donor-advised fund lets you bunch multiple years of charitable giving into a single tax year to exceed the standard deduction threshold, then recommend grants from the fund over time.

Are there deductions I should take before year-end to reduce my tax bill?

Several deductions require action before December 31 to count for the current tax year. Prepaying January rent qualifies under the 12-month rule if the lease term does not extend beyond the following year. Purchasing equipment triggers Section 179 or bonus depreciation in the year placed in service. Funding a SEP-IRA does not require a year-end contribution (the deadline extends to the filing deadline), but solo 401(k) employee deferrals must be elected by December 31. Review your projected income in November and accelerate deductible expenses into the current year if your marginal rate will be lower next year.

Can I deduct startup costs before my business earns any revenue?

Under IRC 195, you can immediately deduct up to $5,000 of startup costs in the year your business begins operating, with the remainder amortized over 180 months (15 years). The $5,000 immediate deduction phases out dollar-for-dollar once total startup costs exceed $50,000. Startup costs include market research, travel to investigate the business, advertising before opening, employee training before operations begin, and professional fees for setting up the entity. The key requirement is that the business must actually begin operating; costs for a business you investigated but decided not to pursue are generally not deductible. The amortization period starts in the month the business opens its doors to customers, not when you began incurring costs.

Related guides:

• Donating Appreciated Stock to Charity: The Double Tax Benefit for Business Owners

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.