C10, in plain English.

B$830. That is the weekly insurable wage ceiling governing every NIB contribution in the Bahamas, up from B$810 before July 1, 2026. The C10 is the monthly form that sits between that figure and the remittance, and it is what the National Insurance Board uses to verify that every employer calculated contributions correctly.

What the C10 records.

The National Insurance Board administers the C10 as a monthly contribution schedule. For each employee, the form captures three things: their insurable wages for the period, the employee NIB portion at 4.65 percent, and the employer NIB portion at 6.65 percent. The combined rate is 11.3 percent. Both calculations apply to insurable wages only. Pay above B$830 per week sits outside NIB's scope entirely. The C10 lists each portion separately, with the employer contribution distinct from the employee deduction. That split is exactly what a NIB audit checks first.

Running the numbers.

Take a worker earning B$1,000 per week. Only B$830 counts toward NIB. The employee's deduction is B$830 at 4.65 percent: B$38.60. The employer's contribution is B$830 at 6.65 percent: B$55.20. The B$170 above the ceiling is simply out of scope.

When it is due.

Due by the 15th of the following month, the C10 is a monthly return. January contributions: due February 15. February contributions: due March 15. The employer submits the completed schedule and remits the collected contributions at the same time. For overdue contributions, confirm the assessed balance and any interest directly with NIB. Reconcile the monthly statements to payroll and payment confirmations as an internal control.

Where audits find errors.

NIB audits surface the same mistakes, return after return.

• Applying the rate to gross wages instead of insurable wages. The ceiling is the rule. Wages above B$830 per week are outside the calculation. Employers who ignore the cap overcalculate both the employee deduction and the employer contribution, remitting more than NIB requires and creating a reconciliation problem in contribution records.
• Using a stale ceiling after the July 1 update. The insurable wage ceiling moved from B$810 to B$830 on July 1, 2026. Payroll still calculating on B$810 has understated NIB on every C10 filed since.
• Collapsing the two rates into one deduction. The employee rate is 4.65 percent. The employer rate is 6.65 percent. The C10 requires both portions reported separately. Running the combined 11.3 percent as a single employee deduction misrepresents who paid what and fails a NIB audit on structure alone.
• Missing the monthly payment deadline. The deadline is fixed. Confirm any outstanding balance, interest and correction instructions directly with NIB.

How Workzoom runs it.

Workzoom calculates Bahamian NIB on every pay run and generates the C10 for the employer to submit and remit. Bahamian NIB is part of the calculation engine, not a rate table bolted on for one market. Cable Bahamas, an 850-employee organization and a Workzoom customer, runs Bahamian payroll on the platform. Every cycle produces a ready-to-submit C10. The employer signs. The employer submits. The math was already done.