Computing your take-home annual pay from the gensen choshuhyo (withholding tax slip) — the number written nowhere on it
Negotiating terms for a new job, planning mortgage repayments, reviewing the household budget. If someone asked "What is your take-home annual pay?", could you answer on the spot? In fact, no field anywhere on the withholding slip says "take-home". On top of that, the slip does not show resident tax, so the document is designed in a way that staring at the printed figures alone will never get you to your take-home pay. This article walks through how to compute take-home annual pay from four numbers on the withholding slip, with a worked example using actual figures.
- Take-home annual pay = payment amount − (social insurance premiums + withheld income tax + resident tax)
- Of these, only resident tax is missing from the withholding slip. Check it on your resident tax decision notice, or estimate it.
- As a rough guide, take-home is 75–80% of gross pay (single, no dependents).
Only four numbers are needed
Of the amounts printed across the top of the withholding slip, the take-home calculation directly uses the following three, plus resident tax. Each field is explained in detail in our guide to reading the withholding slip.
| Field on the slip | Meaning | Role in the calculation |
|---|---|---|
| Payment amount | Your gross annual salary (bonuses included; tax-free commuting allowance excluded) | Starting point |
| Social insurance premiums etc. | Health insurance, employees' pension, employment insurance and other premiums deducted from pay over the year | Subtract (1) |
| Withheld income tax | Your full-year income tax after the year-end adjustment (reconstruction surtax included) | Subtract (2) |
| (not shown) | Resident tax — it does not appear on the withholding slip | Subtract (3) (check separately) |
Where to find your resident tax — the notice, or a 10% estimate
Resident tax appears not on the withholding slip but on the resident tax decision notice distributed through your employer around June each year (how to read the notice). If you do not have it at hand, the following estimate is accurate enough for practical purposes.
The "+¥50,000" is a rough correction for the fact that the basic deduction for resident tax is ¥50,000 smaller than for income tax. The exact mechanism is covered in how resident tax works and is calculated, but if your goal is knowing your take-home pay, the estimate is fine. One caveat: resident tax is levied the following year on the previous year's income, so in a year when your income changes sharply — or in your first year in the workforce — the resident tax being deducted now and the resident tax on this year's income will not match.
Worked example: gross pay of ¥4.5 million
Take a company employee living alone whose withholding slip reads as follows.
Figures on the withholding slip (example)
Payment amount: ¥4.5 million / Amount after employment income deduction: ¥3.16 million / Total income deductions: ¥1.16 million / Withheld income tax: ¥105,000 / Social insurance premiums etc.: ¥680,000
Step 1: estimate resident tax
(¥3.16m − ¥1.16m + ¥0.05m) × 10% = about ¥205,000
Step 2: apply the formula
¥4.5m − (¥680,000 + ¥105,000 + ¥205,000) = take-home annual pay of about ¥3.51 million
→ About ¥293,000 per month (annual basis, bonuses included). The take-home ratio against gross pay is about 78%.
Gross ¥4 million → take-home about ¥3.2 million / ¥5 million → about ¥3.9 million / ¥6 million → about ¥4.6 million / ¥7 million → about ¥5.25 million. As gross pay rises, the take-home ratio slides from 80% toward 75%. To get precise figures from your own numbers, try the simulators on our calculator tools page.
How to increase the take-home pay you just computed
Once you know your take-home pay, the next step is increasing it. Three levers can move a take-home figure based on the withholding slip: (1) increase income deductions (iDeCo, furusato nozei hometown-tax donations, the medical expense deduction and so on); (2) understand how social insurance premiums are determined (how the standard monthly remuneration works); (3) make use of tax-free allowances. The full checklist is in our take-home pay action list. If bonus take-home is on your mind, see tax and take-home pay on bonuses as well.
What to do today
- Get out your withholding slip (the one received between December last year and January this year) and write down the four numbers
- Compute your take-home annual pay with the formula in this article (for resident tax, use the June notice or the 10% estimate)
- If the take-home ratio bothers you, check the take-home pay action list for concrete moves
Frequently asked questions
Does the withholding slip show my take-home pay?
No. The "payment amount" is your gross annual salary; take-home pay has to be computed yourself by subtracting social insurance premiums, withheld income tax and resident tax (which the slip does not show) from the payment amount.
Where can I check my resident tax amount?
The annual amount appears on the resident tax decision notice distributed through your employer around June each year. Without it, you can get a rough figure with (amount after employment income deduction − total income deductions + ¥50,000) × 10%.
What share of gross pay do I keep?
For a single earner with no dependents, roughly 80% at around ¥4 million gross and roughly 75% at around ¥7 million. Dependents, deductions such as iDeCo and your municipality all shift the figure, so compute from your own withholding slip for accuracy.
Sources
This article is based on the following primary sources.
- National Tax Agency No.1400: Employment income
- National Tax Agency No.2662: How the year-end adjustment works
- Ministry of Internal Affairs and Communications: How individual resident tax works
*This article is general information. Tax and premium amounts depend on individual circumstances (dependents, deductions, municipality, health insurance plan). Check exact figures on your withholding slip, resident tax decision notice and pay statements.
