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Small tools for the parts of life here that come down to a rule and some arithmetic — the questions people ask most and get wrong most. Each one shows the rule it implements and links the official source, so you can check it rather than trust it. They are free to use, link to and quote.
Shenzhen decision lab
Shortlist a neighborhood, estimate a monthly move budget and sort the next three relocation steps—without creating an account.
Open the interactive tools →China tax residence day counter
Count days of presence under the 24-hour rule, see whether you cross 183 days, and catch an absence long enough to restart the six-year clock.
Open the calculator →Shenzhen medical insurance calculator
What Tier 1 and Tier 2 cost you each month on the city's published 2026 base and rates — and what the tier actually buys.
Open the calculator →China income tax calculator
Resident or non-resident, foreign or Chinese national — the 2026 bands, the deductions you are entitled to, the foreigner either/or election, and why your December payslip is smaller than January’s.
Open the calculator →Cost of living: your city vs Shenzhen
Seven real Shenzhen budgets on one side, your own numbers on the other, compared line by line in your currency.
Open the comparison →Why these exist
Both answer a question that has a published, checkable answer and that almost everybody gets wrong in the same direction. The tax one exists because arrival and departure days do not count and people assume they do. The insurance one exists because your employer chooses your tier and most people never find out which.
If one gives you a wrong answer, tell me: [email protected].