He Spent $10,000 Turning His Black Belt Into a Second Career. The IRS Called It a New Profession, Not a Deduction.

A Second Act on the Mat

Picture a 64-year-old who has trained in martial arts for decades. He claimed Social Security at 62, but retirement never quite suited him. Now he wants to turn his black belt into a business of his own. Before opening the school, he spends roughly $10,000 on advanced instruction and an instructor certification, viewing the money as a business investment. The IRS draws a firm line, however, between improving skills in work he already performs and acquiring what he needs to enter a new profession.

That line may cost him the deduction.

When Training Becomes Personal

Work-related education is generally deductible when it maintains or improves skills used in an existing trade or business. A working martial arts instructor who takes advanced courses to sharpen his teaching may qualify under that standard. Our longtime hobbyist starts from a different position. If the certification prepares him to teach professionally for the first time, the IRS treats it as education that qualifies him for a new trade or business. Those costs remain personal and nondeductible, even when the training leads directly to paying students. The key point, confirmed in IRS Topic 513, is that both tests are evaluated based on the nature of the program rather than the taxpayer’s intent.

The black belt proves he knows the art. It does not prove he was already in the business of teaching it. That distinction matters because startup costs live in a separate category entirely. Under IRC Section 195, costs such as a business plan, market research, and pre-opening advertising can qualify for immediate deduction. The One Big Beautiful Bill Act, signed into law on July 4, 2025, raised that Section 195 immediate deduction from $5,000 to $50,000 for tax years beginning after December 31, 2024, a tenfold increase that benefits most new small businesses. The phase-out threshold also climbed from $50,000 to $500,000 in total qualifying startup costs. Even so, calling the instructor training a startup expense does not automatically move it past the education rule. Section 195 does not expand what types of expenses are deductible; it only changes when they can be claimed.

Social Security Counts What the School Keeps

Once the first students bow onto the mat and begin paying tuition, the retirement picture shifts. Social Security looks at the school’s net profit, not every dollar that passes through the register. Rent, equipment, insurance, and advertising all come out first. What remains is generally subject to self-employment tax and enters his earnings history, which could eventually work in his favor.

Because he claimed before full retirement age (FRA), that profit also falls under the retirement earnings test. In 2026, someone who remains below FRA for the entire year can earn $24,480 before Social Security begins withholding $1 in benefits for every $2 above the limit. The withheld benefits are not gone permanently. His monthly payment is adjusted upward once he reaches FRA to account for the months he did not receive checks.

There is a potential upside as well. A strong year from the school could replace a weaker year in the 35-year earnings history used to calculate his benefit. The same profit that temporarily holds back checks today may add to his monthly payment for the rest of his life.

Before He Pays for the Next Belt

Two records will help keep the tax picture straight.

1. Document when teaching became paid work. Prior students, contracts, income records, and business filings can help establish whether later education improved an existing profession or opened a new one.
2. Keep training, startup, and operating expenses in separate categories. They may all feel like costs of opening the school, but the IRS routes them through different doors with different consequences.

The $10,000 may not produce a deduction, but that does not make the school a poor second act. Once the doors open, legitimate operating expenses offset income, profitable years strengthen his retirement record, and decades on the mat can finally become a business of his own.

Editor’s note: This article has been updated to reflect the One Big Beautiful Bill Act, signed July 4, 2025, which raised the Section 195 startup cost immediate deduction from $5,000 to $50,000 and increased the phase-out threshold from $50,000 to $500,000 for tax years beginning after December 31, 2024.

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