Simplified Consumption Tax Scheme Advantage Judge (Japan)
Enter your taxable sales, business category, and taxable purchases to instantly compare Japan's simplified consumption tax scheme (deemed purchase rate) against the standard scheme (actual deduction) and see which reduces your tax bill.
What Is the Simplified Scheme Advantage Judge?
The Simplified Consumption Tax Scheme Advantage Judge lets you enter your taxable sales, business category, and taxable purchases to estimate and compare Japan's simplified consumption tax scheme (which deducts input tax using an industry-wide deemed purchase rate) against the standard scheme (which deducts the actual taxable purchases you report).
The simplified scheme is only available to small businesses and sole proprietors whose base-period (two years/fiscal years prior) taxable sales are 50 million yen or less, and choosing it involves weighing both reduced bookkeeping effort and potential tax savings. This tool helps you see which option is better before filing your consumption tax return.
How to Use
- Enter your base-period taxable sales Enter taxable sales from two fiscal years prior (two years prior for sole proprietors). Above 50 million yen, the simplified scheme is not available.
- Choose the tax rate and business category Select the standard 10% or reduced 8% rate, then choose the matching business category (Category 1 through 6).
- Enter this period's taxable sales and purchases Enter the taxable sales and actual taxable purchases (excl. tax) for the period you are filing.
- Check which method is better The tax payable under each scheme is shown, along with which one saves you more.
Tips for getting more out of it
- The simplified scheme is only available to businesses whose base-period taxable sales (two years prior for sole proprietors, two fiscal years prior for companies) are 50 million yen or less. Above that, the standard scheme applies automatically.
- To choose the simplified scheme, you generally must file an "Election Notification for the Simplified Taxation System" with the tax office by the day before the taxable period begins.
- Once elected, the simplified scheme generally applies continuously for two years, during which you cannot switch back to the standard scheme. Consider next year's outlook, not just the current period.
- If you operate multiple business types, you may need to allocate taxable sales across categories and apply each category's deemed rate separately. This tool provides a single-category estimate.
- Even if you don't have exact figures for actual taxable purchases, using an estimate from a recent financial statement is a useful starting point for comparison.
Use Cases
Choosing a filing method before your tax return
Sole proprietors and small companies can estimate whether the simplified or standard scheme is better before preparing their consumption tax return.
Simulating before submitting the simplified scheme election
Before the election deadline, run projected figures for the upcoming period to factor in the two-year lock-in when deciding.
Re-checking after a change in purchase costs
If capital investment or a change of suppliers significantly shifts your taxable purchases, re-check whether the simplified scheme is still the better option.
Glossary
- Simplified taxation scheme
- A simplified way to calculate Japan's consumption tax input deduction using a fixed deemed purchase rate for your business category, instead of tallying actual taxable purchases.
- Deemed purchase rate
- The percentage of tax on taxable sales that can be deducted under the simplified scheme, set per business category from 90% (wholesale) down to 40% (real estate).
- Standard taxation scheme
- The default method of calculating Japan's consumption tax, which deducts the actual tax paid on taxable purchases from the tax due on taxable sales.
- Base period
- The period used to determine simplified-scheme eligibility: two years prior for sole proprietors, or two fiscal years prior for companies.
- Business category
- The industry classification (Category 1 through 6) used to determine the deemed purchase rate under the simplified taxation scheme.
Frequently Asked Questions
Side Note — Why deemed purchase rates range from 90% down to 40%
Japan's simplified consumption tax scheme sets deemed purchase rates that swing by as much as 50 percentage points across industries, from 90% for wholesale down to 40% for real estate. This spread reflects each industry's typical cost-of-goods ratio: wholesalers resell goods largely as-is, so their taxable purchase costs are very high relative to sales, while service and real estate businesses rely more on labor and existing assets, leaving relatively little in the way of taxable purchases.
The scheme was created when Japan introduced consumption tax in 1989, specifically to ease the bookkeeping burden on small businesses. Tracking every taxable purchase in detail is a heavy lift for operators without a full accounting department, so the deemed rate lets businesses estimate their tax liability using an industry average instead of itemized records.
Because the deemed rate is only an industry average, it favors businesses whose actual purchase costs run below that average, while businesses with above-average purchase costs come out ahead under the standard scheme. This mismatch between individual circumstances and industry averages has been debated since the scheme's creation, and comparison tools like this one help operators check the numbers for their own situation.