Life Insurance Premium Deduction Calculator
Enter your annual life insurance premiums for the general, nursing-care-medical, and individual pension categories to automatically calculate Japan's life insurance premium deduction (income tax and resident tax) under both the new and old systems.
The life insurance premium deduction is an income deduction that lets you subtract a set amount from taxable income (for both income tax and resident tax) based on the premiums you've paid. The category breakdown, caps, and calculation tables differ depending on whether your contract was signed on or after January 1, 2012 ("new system") or before that date ("old system"). Enter your annual premiums for each category, and this tool will automatically select whichever combination of new and old rules gives the larger deduction.
New system (contracts from January 1, 2012 onward) calculation table
| Annual premiums paid | Income tax deduction | Resident tax deduction |
|---|---|---|
| ¥20,000 or less | Full amount of premiums paid | Full amount of premiums paid |
| Over ¥20,000, up to ¥40,000 | Premiums × 1/2 + ¥10,000 | Premiums × 1/2 + ¥6,000 |
| Over ¥40,000, up to ¥80,000 | Premiums × 1/4 + ¥20,000 | Premiums × 1/4 + ¥14,000 |
| Over ¥80,000 | Flat ¥40,000 | Flat ¥28,000 |
This table applies to all three categories — general life insurance, nursing-care-medical insurance, and individual pension insurance. Each category is capped at ¥40,000 for income tax and ¥28,000 for resident tax; the combined cap across all three categories is ¥120,000 for income tax and ¥70,000 for resident tax.
Old system (contracts through December 31, 2011) calculation table
| Annual premiums paid | Income tax deduction | Resident tax deduction |
|---|---|---|
| ¥25,000 or less | Full amount of premiums paid | Full amount of premiums paid |
| Over ¥25,000, up to ¥50,000 | Premiums × 1/2 + ¥12,500 | Premiums × 1/2 + ¥7,500 |
| Over ¥50,000, up to ¥100,000 | Premiums × 1/4 + ¥25,000 | Premiums × 1/4 + ¥17,500 |
| Over ¥100,000 | Flat ¥50,000 | Flat ¥35,000 |
This table applies to the two categories of general life insurance and individual pension insurance (the old system has no nursing-care-medical category). Each category is capped at ¥50,000 for income tax and ¥35,000 for resident tax.
Special table for the 2026 and 2027 tax years (dependents under 23)
| Annual premiums paid | Income tax deduction |
|---|---|
| ¥30,000 or less | Full amount of premiums paid |
| Over ¥30,000, up to ¥60,000 | Premiums × 1/2 + ¥15,000 |
| Over ¥60,000, up to ¥120,000 | Premiums × 1/4 + ¥30,000 |
| Over ¥120,000 | Flat ¥60,000 |
This special measure applies to the 2026 and 2027 tax years (Reiwa 8 and 9) under Article 41-15-5 of Japan's Act on Special Measures Concerning Taxation, and only to the income tax portion of the general life insurance premium deduction (new system). The cap rises to ¥60,000 (up from the usual ¥40,000), and when combined with old-system contracts the combined cap is also ¥60,000. It does not apply to resident tax or to the nursing-care-medical or individual pension categories.
Simulator
What Is the Life Insurance Premium Deduction Calculator? How the New and Old Systems Differ
The Life Insurance Premium Deduction Calculator lets you enter your annual premiums for the general, nursing-care-medical, and individual pension categories and automatically works out how much you can deduct from both income tax and resident tax. Because the calculation table and the caps differ depending on whether a policy was contracted under the "new system" (2012 onward) or the "old system" (through 2011), working this out by hand each year at tax-adjustment or filing time — matching each certificate against the right table — is tedious. This tool removes that manual step.
When a taxpayer holds both new and old contracts within the general life insurance or individual pension category, the tool automatically compares "new system only," "old system only," and "new and old combined," and applies whichever combination produces the larger deduction. That said, this tool is meant for a quick, simplified estimate. The actual deduction depends on the category and amount printed on the certificate your insurer sends you, so for an official year-end adjustment or tax return, always confirm the figures on that certificate before entering them.
Sources used in this calculation
Statutory figures such as tax and insurance rates come from the public bodies listed below. They change when the law is revised, so please also check the primary source before relying on the result for an important decision.
- Japan life insurance premium deduction brackets & caps — National Tax Agency (国税庁) Effective from 2012-01 ／ Last checked 2026-10-19
How to Use the Life Insurance Premium Deduction Calculator
- Gather your premium deduction certificates Have the life insurance premium deduction certificates sent by your insurer on hand, and check the category (new or old system) and the annual premium shown on each.
- Enter the annual premium for each category Enter the annual premium you paid for whichever of the general, nursing-care-medical, and individual pension categories apply to you.
- Separate new and old contracts If you hold both a new-system and an old-system contract within the same category, enter each amount in its own field.
- Check the calculated deduction The income tax and resident tax deductions are calculated automatically, along with a breakdown by category.
- Copy the figures onto your paperwork Transfer the resulting deduction amounts onto your year-end insurance premium deduction form or your tax return.
Tips for getting more out of it
- Your life insurance premium deduction certificate clearly states whether a policy falls under the "new system" or "old system." Even for the same "general life insurance" category, the classification can differ depending on when the contract was signed, so always check the certificate.
- If you have both new and old contracts in the general or individual pension category, the old-system-only deduction (capped at ¥50,000) can sometimes be more advantageous than combining new and old (capped at ¥40,000, or ¥60,000 for the income tax on general life insurance under the 2026–2027 special measure for dependents under 23). This tool automatically calculates whichever option is more favorable.
- Even if your annual premiums exceed the cap for the deduction (¥80,000 under the new system, ¥100,000 under the old system), paying more in premiums will not increase your deduction any further. There's no need to increase your premiums solely to boost the deduction.
- To qualify for the individual pension insurance premium deduction, your contract must include a "tax-qualified individual pension insurance rider." A plain pension-type insurance policy without this rider may instead fall under the general life insurance category, so check your certificate carefully.
When This Calculator Is Useful
Checking your deduction before year-end tax adjustment
Get a preview of your deduction amount before submitting the insurance premium deduction form to your employer.
Double-checking a self-filed tax return
Use it to verify that the deduction you calculated by hand for your final tax return is correct.
Comparing the effect of reviewing an old-system policy
Simulate how your deduction would change if you revisited or replaced an old-system contract.
Checking the combined cap across multiple policies
If you hold general, nursing-care-medical, and individual pension policies at once, confirm whether you have already hit the combined cap across all three categories.
Life Insurance Premium Deduction Glossary
- life insurance premium deduction
- An income deduction that lets you subtract a set amount, based on the life insurance premiums you paid, from your taxable income for both income tax and resident tax purposes.
- new system / old system
- Contracts signed on or after January 1, 2012 fall under the new system; contracts signed before that date fall under the old system. The categories, caps, and calculation tables differ between them.
- nursing-care-medical insurance premium deduction
- A category created by the fiscal 2010 tax reform and applied to contracts concluded on or after January 1, 2012, covering premiums for medical insurance, nursing-care insurance, and similar policies. It has no equivalent under the old system.
- life insurance premium deduction certificate
- A document your insurance company sends showing your annual premiums and which system (new or old) the policy falls under. It is required when filing a year-end adjustment or tax return.
- year-end tax adjustment
- The process by which salaried employees settle their annual income tax through their employer, reporting deductions such as the life insurance premium deduction along the way.
Frequently asked questions
Side Note — Why the life insurance premium deduction split into "new" and "old" systems
The life insurance premium deduction is a long-standing system created in 1951. Following the introduction of a new nursing-care-medical insurance premium deduction category in the 2010 tax reform, new categories and caps came to apply to contracts signed on or after January 1, 2012. Contracts predating that reform (the old system) were left unchanged under transitional measures, retaining their original categories and caps.
The background to the new system was the fact that Japan's public nursing-care insurance system had become well established, increasing demand for private nursing-care coverage. Previously there were only two categories — life insurance and individual pension insurance — and it's said that creating a separate nursing-care-medical category was intended to encourage people to take out medical and nursing-care coverage.
At the same time, to avoid disadvantaging policyholders with old-system contracts, a mechanism was set up allowing people to choose whichever option is more favorable when both new and old contracts exist. Because life insurance contracts often involve paying premiums over many years, this kind of design — aimed at preventing sudden burden increases for existing policyholders whenever tax rules change — is a recurring theme in Japan's insurance tax policy.