Five insurances. One fund. City‑tier rates. China payroll, mastered.
China’s payroll is not a national system – it is a city-by-city matrix of contribution rates, bases, and filing portals. It demands a live five-insurance engine with city-tier rate tables, Housing Provident Fund dual-rate logic, IIT progressive computation with cumulative withholding, and in-country teams with direct authority relationships. Most providers deliver two of these. Mercans delivers all of them – on a single proprietary stack with no intermediaries.
native payroll
vs nearest peer
since inception
- Employer Pension
- ~16% (city-specific)
- Employee Pension
- 8%
- Employer Medical
- ~9.8% (maternity merged, city-specific)
- Employee Medical
- 2% + fixed amount
- Unemployment (ER+EE)
- ~0.5% + ~0.5%
- Work Injury (ER)
- ~0.2%–1.9% (industry-rated)
- Housing Fund (ER+EE)
- 5%–12% each (city-specific)
- IIT Income Tax
- Progressive 3%–45%
- IIT Method
- Cumulative withholding
- SI Base Floor
- 60% city avg. wage
- SI Base Ceiling
- 300% city avg. wage
- Annual SI Base Reset
- July (most cities)
- Contracts
- Chinese mandatory
- Payment Channel
- Bank transfer · CNY only
Payroll compliance: the details that can’t be missed
China’s regulators don’t grade on a curve. The Social Security Bureau retroactively assesses shortfalls on underpaid contribution bases. The Tax Bureau auto-flags IIT discrepancies via the Golden Tax System. Housing Fund authorities levy penalties on non-compliant employers. City-level rate changes occur annually without national coordination. None of these failures announce themselves – they accumulate silently until an audit makes them very visible.
Social insurance base shortfall + back-payment
All unclaimed contribution gaps from under-reported salary bases are recoverable with penalties. Employers who set SI bases below the city floor or fail to update during the annual reset face full retroactive assessments.
IIT cumulative withholding miscalculation
China’s IIT uses cumulative withholding – each month’s tax is computed on year-to-date income less year-to-date deductions. A single month’s error compounds through every remaining pay period. The Golden Tax System flags discrepancies automatically.
Housing Fund non-compliance = employee claims
Housing Provident Fund contributions are a statutory employee right. Non-compliant employers face employee complaints to the Housing Fund Management Centre, resulting in mandatory back-payment orders with daily penalties.
City-tier rate mismatch = systemic error
China has no single national SI rate table. Beijing, Shanghai, Guangzhou, and Shenzhen each set independent rates, base floors, and ceilings. An employer using Tier-1 rates for a Tier-2 city employee produces systemic over- or under-contributions across every pay period.
The three types of providers who struggle with China
Global Aggregator Platforms
Platforms like Deel, Remote, and Rippling operate through a partner network in China — they don’t own the entity, don’t directly manage SSB filings, and don’t control the city-by-city compliance relationship. When a city updates its average wage and rate tables, the instruction travels: platform → partner → your payroll. Each handoff introduces delay and interpretation risk.
- ×No direct SSB relationship — third-party intermediary handles filings
- ×City-tier rate tables typically flat or limited to Tier-1 cities only
- ×Housing Fund rate flexibility (5%–12%) often not configurable
- ×Regulatory updates filtered through partner SLAs, not live
Large Global Payroll Incumbents
ADP, Ceridian, and similar incumbents have China coverage — in name. In practice, their China coverage is often delivered through regional partners or legacy systems that weren’t built for China’s city-specific rate architecture, annual SI base resets, or the cumulative IIT withholding method.
- ×Single national rate table applied — city-specific rates collapsed
- ×Annual SI base reset often requires manual intervention
- ×Long implementation timelines — China complexity underestimated
- ×No Chinese-language contract generation in-platform
Local Chinese Firms
Local Chinese accounting firms and FESCO-linked agencies know the market — but they can’t scale with you. No payroll technology platform, no HCM integration, no multi-country consolidation, and no data security certifications that multinationals require. Fine for 20 employees in one city. Inadequate at 200 across five.
- ×No proprietary payroll technology — manual spreadsheet-based processing
- ×No HCM connector — Workday, SAP, Oracle feeds require custom work
- ×No data security certifications (SOC 1/2, ISO 27701, BCR)
- ×No multi-country consolidation — cannot report across China + other APAC entities
The only provider that closes every gap
Mercans is the only China payroll provider that combines a proprietary payroll technology stack, full-time in-country compliance teams, direct authority relationships, and enterprise-grade data security – simultaneously, on one contract, with no intermediaries.
The only engine built for China’s actual payroll architecture
G2N Nova™ is the world’s only API-first gross-to-net payroll engine. It natively models China’s five social insurances as independent calculation layers per city, handles Housing Provident Fund dual-rate logic (5%–12% employer + 5%–12% employee), enforces annual SI base resets with city-specific average wage data, and runs cumulative IIT withholding with special deduction tracking. This isn’t configuration. It’s engineering.
Full-time China team – not a partner you phone when things break
Mercans employs full-time payroll and compliance professionals in China. They maintain active relationships with the State Tax Administration, Social Security Bureaus, and Housing Fund Management Centres across major cities – not through a contact directory, but through ongoing regulatory engagement. When a city publishes new average wage data, when the Tax Bureau updates IIT thresholds, when a Housing Fund authority adjusts rate bands – we know before it reaches your inbox.
The security posture multinationals require – and China now mandates
China’s Personal Information Protection Law (PIPL) requires payroll processors handling employee personal data to maintain documented privacy controls, consent management, and data localisation frameworks. Cross-border data transfers require security assessments. Mercans holds BCR approval, ISO 27701 certification, SOC 1 & 2 certifications, and ISO 27017/27018 – the only payroll provider in APAC with this complete certification stack. Zero security breaches since inception.
Where Mercans wins on every China-specific capability
Each row is a China-specific capability. Each cell shows native coverage as a fill bar – full = native in-platform, half = partial / manual workaround, empty = gap.
China Capability Coverage · 11 dimensions
Pension + Medical (incl. maternity) + UI + WI
YTD income − YTD deductions
July cycle · city avg. wage
Workday · SAP · Oracle
Every rate. Every cap. Every obligation.
China payroll operates on city-specific numbers with annual rate resets. Mercans builds every figure below into G2N Nova™ and monitors them proactively – so you’re never discovering a rate change from a penalty notice.
China · Rate & Compliance Dashboard
Live 2025–26Social Insurances Are Separate Calculation Engines
China’s social insurance system comprises pension, medical (including maternity, now merged in most cities), unemployment, and work injury insurance – each with independent rates, base caps, and filing requirements that vary by city. A compliant China payroll must calculate all independently per employee per city. Mercans’ G2N Nova™ maintains them as separate calculation engines.
→ Modelled natively in G2N Nova™Annual SI Base Reset Requires City-Specific Wage Data
Each July (in most cities), the social insurance contribution base is recalculated using the previous year’s city average wage. The floor (60%) and ceiling (300%) shift accordingly. Employers who don’t update within the reset window accumulate retroactive adjustments.
→ Automated annual SI base reset across all covered citiesPIPL Compliance Is a Payroll Processor Obligation
China’s Personal Information Protection Law (2021) places explicit obligations on entities that process employee personal data – including payroll providers. Cross-border data transfers require Cyberspace Administration security assessments or standard contractual clauses.
→ BCR · ISO 27701 · PIPL agreements standardIIT Cumulative Withholding Compounds Monthly Errors
China’s Individual Income Tax uses a cumulative withholding method – each month’s tax is computed on year-to-date taxable income less year-to-date tax already withheld. A single month’s error in deductions, special deductions, or taxable income compounds through every remaining month of the tax year.
→ Full YTD cumulative IIT engine on every China payroll runRun a China payroll. Right here, right now.
Switch workforce type. Move the slider. Every number you see is the same calculation G2N Nova™ runs in production – five-insurance city-tier logic, Housing Fund dual-rate computation, cumulative IIT withholding, and true cost of employment exposed live.
China Payroll Sample · Live
G2N Nova™ engineEight things only China experts know to handle
These are the compliance details that don’t appear in standard payroll setup guides – but appear in every SSB audit, Tax Bureau inspection, and Housing Fund dispute we’ve encountered in China over 15 years.
Social Insurance Rates Are City-Specific, Not National
There is no single national SI rate table. Beijing, Shanghai, Guangzhou, Shenzhen, and every other city set independent contribution rates for all five insurance categories. Using a “standard China rate” guarantees systemic over- or under-contributions for every employee not in the reference city.
Annual SI Base Reset Is a Payroll Event, Not Admin
Each July (in most cities), social insurance contribution bases are recalculated using the previous year’s city average wage. The floor (60% of average) and ceiling (300% of average) shift accordingly. Employers who don’t update within the reset window accumulate retroactive adjustments that compound monthly.
Housing Provident Fund Rate Is Employer-Elected
The Housing Provident Fund allows employers to elect a contribution rate between 5% and 12% (both employer and employee match). The elected rate applies to both sides equally. Changing the rate requires approval from the Housing Fund Management Centre and can only be adjusted during the annual review window.
IIT Cumulative Withholding Means Every Month Depends on January
China’s IIT uses cumulative withholding: each month’s tax = (YTD taxable income × applicable rate − quick deduction) − YTD tax already withheld. This means a January error persists through December. Mid-year joiners start a fresh YTD accumulation from their join month, creating parallel calculation tracks.
Seven IIT Special Deduction Categories Require Employee Self-Declaration
China’s IIT allows seven categories of special additional deductions: children’s education, continuing education, serious illness medical expenses, housing loan interest, housing rent, elderly care, and infant care. Employees self-declare via the IIT app, and employers must incorporate these into cumulative withholding calculations.
Expat Social Insurance Is Mandatory Since 2011
Foreign nationals working in China on work permits are subject to social insurance contributions since the 2011 Social Insurance Law. However, bilateral social security agreements with select countries provide exemptions. Without a valid Certificate of Coverage from an SSA country, full five-insurance contributions apply.
IIT Annual Reconciliation Creates March Pressure
Employees with income from multiple sources, or whose monthly withholding doesn’t match their annual liability, must complete annual IIT reconciliation (March 1–June 30). Employers who under-withheld face Tax Bureau scrutiny. The reconciliation process often reveals systemic withholding errors across the workforce.
Statutory Severance “N+1” Is More Complex Than the Formula Suggests
China’s statutory severance formula (one month per year of service, plus one month in lieu of notice) appears straightforward. In practice, the calculation base caps at 300% of the local average wage, service periods include fractional years, and the formula interacts with contract type, probation status, and local arbitration precedent.
One workforce. Two entirely different compliance tracks.
The foundational split in China payroll – local employees on full five-insurance + HPF coverage vs. expats on conditional obligations with treaty considerations – is not a configuration toggle. It requires parallel calculation engines, different filing obligations, and different terminal settlement frameworks. Mercans runs both simultaneously on every pay cycle.
Parallel Compliance Engines
Social insurance registration is mandatory from Day 1. All five insurances apply at city-specific rates on the contribution base (60%–300% of city average wage). Monthly filing and remittance to the local SSB.
Housing Provident Fund is a parallel mandatory contribution. Both employer and employee contribute at the elected rate (5%–12%), matched equally. The base has its own city-specific floor and ceiling, independent from SI.
IIT uses cumulative withholding with seven special deductions. Each month’s tax builds on year-to-date figures. Special additional deductions (education, housing, elderly care, etc.) reduce the taxable base and must be tracked per employee declaration.
Statutory severance accrues from employment start. The N+1 formula (one month per year + one month notice) is capped at 300% of city average wage × 12 months. Service fractions above 6 months count as a full year. This is a continuous liability.
Foreign nationals are subject to SI since 2011. Full five-insurance contributions apply unless the employee holds a valid Certificate of Coverage from a country with a bilateral Social Security Agreement with China.
IIT applies in full to expats on work permits. The cumulative withholding method applies identically to foreign nationals. However, certain allowances (housing, children’s education, language training) may be IIT-exempt until 2027 under transitional rules.
Housing Fund participation varies by city. Some cities mandate HPF for foreign nationals; others make it optional. The rules are city-specific and change independently. Employers must track the policy for each city where expats are employed.
Work permit and residence permit renewals are payroll dependencies. Tax filing history and SI compliance records are reviewed during permit renewals. Non-compliant employers face permit refusals, creating immigration exposure from payroll errors.
Every obligation. Every authority. Mercans owns the calendar.
China compliance runs across the Tax Bureau, Social Security Bureau, Housing Fund Management Centre, and local labour authorities on monthly, annual, and event-triggered cadences. Mercans’ managed payroll absorbs every filing as standard scope – you don’t track deadlines. We do.
Social Insurance Contribution Filing
Social insurance contributions (pension, medical including maternity, unemployment, work injury) filed and remitted to the local Social Security Bureau. City-specific rates and bases apply. Late filing triggers penalties and employee complaints.
Housing Provident Fund Deposit
Employer and employee matched contributions at the elected rate (5%–12%) deposited with the Housing Fund Management Centre. Separate filing from social insurance with independent base calculations and deadlines.
IIT Withholding Declaration
Monthly Individual Income Tax withholding declaration filed via the Golden Tax System. Cumulative withholding method requires year-to-date computation with special deduction tracking per employee.
IIT Annual Reconciliation
Employees with multiple income sources or withholding discrepancies must complete annual IIT reconciliation. Employers facilitate the process and face scrutiny if systemic under-withholding is discovered during reconciliation.
Social Insurance Base Reset
Annual recalculation of SI contribution bases using the previous year’s city average wage. New floor (60%) and ceiling (300%) apply from July. Retroactive adjustments are common when the new average wage is published late.
Statutory Severance & Final Settlement
Statutory severance (N+1 formula), unused annual leave, proportionate 13th-month bonus if applicable, and SI/HPF de-registration. Severance base capped at 300% of city average wage. Calculation interacts with contract type and local arbitration precedent.
Golden Tax System Integration
China’s Golden Tax System (Fapiao) cross-references IIT declarations, employee data, and corporate filings in real time. Discrepancies between declared salary expenses and IIT filings trigger automated audit flags.
SI Transfer on Inter-City Relocation
Employees transferring between cities require social insurance account transfers. The process involves de-registration in the origin city and re-registration in the destination city, with contribution history reconciliation. Timing affects benefit continuity.
China is one market. Mercans covers the entire region.
For companies running payroll across multiple Asian markets, complexity multiplies – not adds. Each country runs its own labour authority, social insurance body, and tax regime. Mercans covers all major APAC markets on a single platform with country-specific compliance engines running in parallel.
covered
1 contract
consolidation
APAC
Every filing. Every format. Submission-ready.
Mercans generates the exact file types that the Tax Bureau, SSB, Housing Fund Management Centre, and local labour authorities expect to receive — not formatted summaries that need reformatting before you can submit them.
