What About Taxes? A Simple Guide to Tax on Business Sales

"How Much of the Sale Price Goes to Taxes?"

When business owners think seriously about succession, taxes are almost always one of the first questions.

"What's the point of getting a good price if most of it goes to the government?"

That's a fair concern. But with a solid understanding of the basics — and the right professional support — there are often ways to minimize the tax impact. Let's start with the fundamentals.

The Two Main Structures: Share Transfer vs. Asset Transfer

There are two primary ways to sell a business, and they are taxed very differently.

Option 1: Share Transfer (Kabushiki Joto)

The owner sells the company's shares to the buyer. The buyer acquires ownership of the legal entity itself.

Tax for the seller:

• Capital gains (sale price minus acquisition cost) are taxed at a flat rate of approximately 20.315% under Japan's separate taxation system for securities
• The rate applies regardless of the size of the gain — it doesn't escalate with higher amounts like ordinary income tax

Option 2: Asset Transfer (Jigyo Joto)

The company itself (as a legal entity) sells its assets, contracts, and liabilities to the buyer.

Tax for the company:

• The gain from the asset sale is treated as corporate income, subject to corporate tax (effective rate approximately 30–35%)
• After that, extracting money from the company to your personal account may trigger additional personal income tax

Share Transfer Is the More Common Choice for SME Owners

In practice, share transfers dominate SME succession deals for several reasons:

• The tax treatment is straightforward: roughly 20% on the gain
• Licenses, permits, and contracts typically transfer automatically with the company
• The structure is simpler for both parties

A Sample Tax Calculation

Selling shares for ¥100 million:

• Acquisition cost (original paid-in capital, etc.): ¥500,000
• Taxable gain: ¥99,500,000
• Tax rate: 20.315%
• Estimated tax: approximately ¥20.2 million
• Estimated after-tax proceeds: approximately ¥79.8 million

This is an illustrative estimate only. Your actual tax liability will depend on your acquisition cost, applicable deductions, and other factors. Always verify with a tax accountant.

Ways to Reduce the Tax Burden

1. Stepped-Up Basis for Inherited Shares

If you inherited shares in the company, Japan's "acquisition cost step-up" rule (shutokuhikazan no tokurei) may allow you to add a portion of the inheritance tax you paid to your cost basis. This reduces your taxable gain.

2. Executive Retirement Bonus

Timing an executive retirement bonus (yakuin taishokukin) around the succession can reduce both corporate tax and your personal tax burden — this requires careful planning with a tax professional.

3. Installment Payments Distribute the Tax Liability

If you receive the sale price in installments rather than a lump sum, your taxable income is spread across multiple years, which may result in a lower aggregate tax burden (depending on how your other income is structured).

Tax Planning Requires Professional Advice

Tax law is complex, and the optimal approach varies significantly depending on your personal situation, the structure of your company, and the specifics of the deal.

Questions like "how much will I actually take home?" and "which structure is most advantageous?" should always be answered by a qualified tax accountant — ideally one with hands-on experience in business succession transactions.

Summary

• For share transfers, expect approximately 20% of the gain to go to taxes
• There are legitimate strategies to reduce that burden
• Always consult a tax professional before making decisions

Tax is an unavoidable cost. But with proper planning, you can maximize what stays in your hands.