Two people both earn 10,000 yuan a month — one pays a few hundred in tax, the other pays nothing. The gap usually comes down to whether the "special additional deductions" were claimed. These 7 deductions are the tax office's gift to taxpayers: each one directly reduces your taxable income, and used well they can save thousands of yuan a year. Yet many people either don't know they qualify or can't figure out how much they save. Let's walk through the standards and the math for all 7 items.
What Special Additional Deductions Are: Understand the "Offset Logic" First
The individual income tax formula is: taxable income = monthly income − 5,000 yuan basic allowance − social insurance & housing fund − special additional deductions, then the taxable income is taxed at progressive rates. Special additional deductions work by reducing your taxable income, which lowers the applicable rate and the tax you owe.
One key point: the deduction reduces "income," not "tax." For example, if you're in the 10% bracket, every 1,000 yuan of additional deduction saves you 1,000 × 10% = 100 yuan in tax. The higher your income and marginal rate, the bigger the tax-saving effect of each deduction. To compute your exact monthly take-home, enter your gross salary and deductions into the salary calculator and it returns your after-tax wage and income tax.
The 7 Deduction Items at a Glance
There are currently 7 special additional deductions, each with its own standard and conditions. Here's the summary table:
| Item | Deduction standard | How it's split | Key conditions |
|---|---|---|---|
| Children's education | 2,000 yuan/month per child | Parents split 50/50 or one claims all | Age 3 through doctoral education |
| Continuing education | 400 yuan/month (degree); 3,600 yuan/year (certificate) | Claimed by the individual | Max 48 months |
| Serious illness | Out-of-pocket over 15,000 yuan, cap 80,000 yuan/year | Individual or spouse | Out-of-pocket portion under medical insurance |
| Housing loan interest | 1,000 yuan/month | One spouse or split | First-home loan, max 240 months |
| Housing rent | 800 / 1,100 / 1,500 yuan/month by city | Renters with no own home in work city | Cannot be combined with loan interest |
| Elderly care | 3,000 yuan/month for only child | Only child claims alone, or split | Parents aged 60 or older |
| Care for child under 3 | 2,000 yuan/month per child | Parents split 50/50 or one claims all | Ages 0-3 |
Worked Example: How Much Does It Save at 10,000 vs. 20,000 Yuan a Month?
Let's use a concrete case. Xiao Li has a 5-year-old child (children's education, 2,000 yuan/month), is an only child supporting parents aged 60+ (elderly care, 3,000 yuan/month), and has a first-home mortgage (1,000 yuan/month). Together that's 6,000 yuan per month in deductions.
If Xiao Li earns 10,000 yuan/month (social insurance and housing fund at 2,000): without claiming, taxable income = 10,000 − 5,000 − 2,000 = 3,000 yuan, taxed at 3%, or 90 yuan/month. After claiming the 6,000 yuan deduction, taxable income = 3,000 − 6,000 = negative, so no tax at all — saving 90 yuan a month.
If Xiao Li earns 20,000 yuan/month (social insurance and housing fund at 4,000): without claiming, taxable income = 20,000 − 5,000 − 4,000 = 11,000 yuan, progressive tax of about 790 yuan/month. After claiming, taxable income = 11,000 − 6,000 = 5,000 yuan, tax of about 250 yuan/month — saving about 540 yuan a month, or 6,480 yuan a year. See the pattern? The higher your income, the more the deductions save. To compare tax burdens across income brackets, run the numbers with the income tax calculator and the percentage calculator.
When to Claim, and Common Misconceptions
Special additional deductions can be withheld month by month (your monthly paycheck immediately taxes less), or claimed in the annual settlement to get a refund. If you changed jobs, had volatile income, or newly added a child, mortgage, or elderly dependents during the year, file promptly in the "Individual Income Tax" app so your monthly payslip benefits right away; anything missed can be claimed in the annual reconciliation from March to June the following year.
Three common misconceptions. First, people think the deduction is a direct tax reduction — it actually reduces taxable income, so don't overestimate the savings, but don't skip claiming either. Second, housing loan interest and housing rent cannot both be claimed — you must pick one. Third, non-only children must agree on how to split elderly-care deductions in advance — the agreed split is capped at 1,500 yuan/month and siblings need to settle it and keep records. Memorize these 7 standards and check each against your own family situation; don't leave any qualifying item unclaimed. It may be the easiest "raise" you overlook every year.