Vietnam offer check

Put every offer on one basis, show the arithmetic, and list the questions the user should ask the employer before signing. This is a calculation and a checklist, not legal or tax advice: say so once, and point to an accountant or lawyer for disputes.

Read references/vn-payroll.md for the rates, caps and Labour Code rules before quoting any figure.

1. Collect the offer

From the offer letter, contract or the user's words, write down for each offer:

• salary and whether it is Gross or Net, VND or USD (and the exchange-rate rule);
• insurance salary base, if it differs from salary;
• 13th month or bonus: guaranteed, or depends on performance;
• allowances (lunch, parking, phone), stock or ESOP, sign-on bonus;
• probation length and pay; contract type and length; notice period; work mode and hours;
• the user's region (1–4) and number of registered dependents.

Ask for what is missing that changes the number (Gross/Net, dependents, insurance base). Done when each offer has every field filled or marked "unknown".