How to calculate organizer commission (tiền thảo) accurately
Three ways to calculate organizer commission / tiền thảo: half-share, % of the pot, fixed fee. When to collect, numeric examples, Decree 19 notes, and automation tips.
Being a tontine organizer takes reputation, time, and risk—especially the risk that a member absconds after taking the pot. In return, organizers earn remuneration called organizer commission—in the Mekong Delta often known as tiền thảo.
This guide covers the three most common commission models, when to deduct it, numeric examples, frequent mistakes, and how to automate it in tontine software.
1. What is organizer commission? How is it different from auction interest?
| Concept | Nature | Who pays / bears it |
|---|---|---|
| Organizer commission (tiền thảo) | Fee for managing the chain | By agreement (often deducted from the take-home) |
| Auction interest / winning bid (B) | The “discount” live slots enjoy when someone takes the pot | Allocated through the live/dead formula |
Confusing these two concepts skews the ledger and invites fights. The general take-home identity is still:
[ \text{Net take-home} = \text{Live collections} + \text{Dead collections} - \text{Organizer commission} ]
Details: auction tontine payout formula.
2. Three most common ways to calculate commission
Method 1 — Percentage of face value (e.g. “half a share”)
Very common in the Mekong Delta for auction tontines. Commission = a fixed % of face value (G) (often 50% = half a share).
Example: (G = 5{,}000{,}000) VND, agreement = half a share:
Commission each take-home = (5{,}000{,}000 \times 50% = 2{,}500{,}000) VND.
Pros: Easy to explain; stable every period.
Cons: On large face values, members may feel the fee is heavy.
Method 2 — Percentage of the period pot (before or after adjustments)
Commission varies by period, often 1%–3% of that period’s gross collections (before deducting commission).
Example: Gross collections = 45,000,000 VND, commission 2%:
(45{,}000{,}000 \times 2% = 900{,}000) VND.
Pros: Scales with real money moved.
Cons: Harder to explain to new members; you must define “% of which number.”
Method 3 — Fixed fee per draw
Simplest: every draw, the winner (or the chain) pays a flat amount, e.g. 500,000 VND.
Pros: Crystal clear.
Cons: Does not auto-adjust for inflation or much larger face values.
3. When to collect organizer commission
3.1. Deduct from the take-home (common, ledger-safe)
When the winner is locked, the ledger deducts (H) before payout.
- The winner receives a large lump sum, so a modest deduction hurts less.
- Easy to reconcile: one deduction line on the notice.
3.2. Add into every period’s contribution
Spread commission across all slots each period.
- Members feel “nickel-and-dimed” more often.
- Math gets messier with mixed live/dead slots.
3.3. Collect once at opening / period 1
Some chains take commission in period 1. Document it in the minutes so nobody frames it as “the organizer ate the first pot.”
Recommendation: pick one model, write it into the opening agreement, and do not change mid-chain without a newly signed consensus.
4. Side-by-side example on the same period
Assume gross collections before commission = 15,900,000 VND, (G = 2{,}000{,}000) VND.
| Method | Calculation | Commission | Remaining take-home |
|---|---|---|---|
| Half-share (50% of (G)) | 0.5 × 2,000,000 | 1,000,000 | 14,900,000 |
| 2% of gross | 2% × 15,900,000 | 318,000 | 15,582,000 |
| Fixed fee | Agreed | 500,000 | 15,400,000 |
Figures are illustrative only—whatever you choose must be agreed with members first.
5. Legal & conduct notes
- Under Decree 19/2019/NĐ-CP, commission is set by member agreement; it is not a hidden fee.
- Huge commission + predatory interest → dispute risk and negative attention from authorities.
- Showing commission as its own line on every notice protects the organizer’s reputation.
- Organizers who also hold slots must separate the “commission” line from “my slot” lines.
Think of commission as payment for operations and risk, not as a silent second interest stream. If your auction bids already push toward the 20%/year frame, stacking an aggressive commission on top can look like double extraction to members—and to anyone reviewing the chain later. Write a one-page opening sheet that shows: face value (G), how live slots / dead slots pay, how (B) is set, and exactly how organizer commission (H) is taken. That single page prevents most “nobody told me” arguments.
See: Is playing tontine legal?.
6. Common commission mistakes
- Changing the formula mid-chain without a meeting / signed minutes.
- Taking % on a total that already includes commission (double-counting).
- Skipping commission for a few periods, then “catching up” with a lump deduction—members hate this.
- Not separating commission when the organizer also takes their own pot that period.
- Leaving commission out of Excel / the app → you cannot report your own management income at year-end.
7. Opening-agreement commission checklist
- Pick 1 of the 3 methods + write a numeric example
- Choose the collection moment (take-home / per-period / opening)
- Put it in the ledger / receipt / contract
- Re-announce in the Zalo group + attach the file
- Configure Excel or the app before period 1
- Every take-home notice has a separate “Organizer commission” line
8. FAQ about organizer commission
Can a member refuse to pay commission?
If they joined under an agreed rule, they must follow it. Changing the rate requires a new consensus under the written playbook.
Does taking commission mean the organizer is exempt from dues?
Not automatically. Only if there is a special agreement (for example, the organizer holds no slots). Keep rights separate.
Do interest-free tontines still pay commission?
They can still pay management remuneration if everyone agrees—write it down so it is not mistaken for hidden interest.
Should you publish annual commission totals?
Yes for large chains—it builds trust. Transparent commission reporting is a strength of digital ledgers.
9. Automate commission with Huio
Managing many chains (chain A = half-share, chain B = fixed fee…) makes hand math fragile. Huio lets you:
- Set the commission model once when creating a chain
- Auto-deduct when you lock an auction / take-home
- Show it clearly on the winner’s notice
- Review commission totals over time
Help — Rules & fees · Download Huio · Excel template with a commission column
10. Quick decision table: which commission model?
| Chain situation | Prefer | Short why |
|---|---|---|
| Members want a memorable fixed number | Half-share / fixed vs (G) | Explain in 10 seconds |
| Face values differ a lot; want scale fairness | % of gross collections | Fee tracks real money |
| Small friends-and-family chain | Low fixed fee | Less tension |
| Many chains; need income reports | Any—but log it in app/Excel | Month-end reconciliation |
Do not pick a model that “sounds clever online” if your members cannot understand it. Shared understanding beats a theoretically optimal formula on paper.
If you are still on spreadsheets, add a dedicated commission column in the free Excel tontine ledger and reconcile it after every draw. When you outgrow that workflow—multiple chains, partial payments, phone-first draws—move the same rule into software so live-slot math, dead-slot math, and commission never drift apart.
11. Conclusion
There is no single “correct” organizer commission number—only a model that matches the written agreement. Choose clearly, deduct consistently every period, and keep the figure transparent in front of members: that is how organizers keep trust for years. A fair commission paid openly is healthier than a “free” organizer who eventually cuts corners on the ledger.