How HBA Affects Royalty Rates in Indonesia
How HBA Affects Royalty Rates in Indonesia
In Indonesia, the Harga Batubara Acuan (HBA) does not directly set the royalty percentage, but it significantly influences the royalty amount paid because royalty formulas use benchmark coal prices as a reference.
Simple Formula
Royalty Payment = Coal Selling Price × Royalty Rate × Volume SoldShow more lines
Where:
- Coal Selling Price is often linked to HBA or HBA-derived reference prices.
- Royalty Rate (%) is determined by mining license terms and government regulations.
- Volume Sold is the tonnage sold.
Higher HBA = Higher Government Revenue
For example:
| Scenario | Coal Price (USD/t) | Royalty Rate | Royalty per Tonne |
|---|---|---|---|
| Weak Market | 60 | 13.5% | 8.10 |
| Strong Market | 120 | 13.5% | 16.20 |
As benchmark prices rise, government royalty collections increase even if production volumes remain unchanged.
Impact on Different Coal Grades
Using your August 2026 HBA values:
| Coal Grade | HBA (USD/t) |
|---|---|
| 6322 GAR | 124.44 |
| 5300 GAR | 93.27 |
| 4100 GAR | 65.48 |
| 3400 GAR | 45.27 |
If two miners each sell 1 million tonnes:
| Grade | HBA (USD/t) | Revenue (USD million) |
|---|---|---|
| 6322 GAR | 124.44 | 124.44 |
| 3400 GAR | 45.27 | 45.27 |
The higher-grade producer generates a larger royalty base because the benchmark value is higher.
Why HBA Matters to Coal Producers
HBA affects:
- Government royalties
- Non-tax state revenue (PNBP)
- Contract pricing references
- Export pricing negotiations
- Company revenue forecasts
- Mining project economics
When HBA increases:
- Producer revenues generally improve.
- Royalty expenses also increase.
- Government revenue rises.
When HBA declines:
- Producer revenues fall.
- Royalty payments decline.
- Government revenue decreases.
Why Low-CV Coal Producers Watch HBA Closely
From your benchmark comparison:
| Grade | HBA | McCloskey FOB |
|---|---|---|
| 4200 GAR | 65.48 | 62.16 |
| 3400 GAR | 45.27 | 39.39 |
The HBA premium over market FOB values is larger for lower-CV coal.
This is important because:
- It provides a more stable benchmark reference.
- It supports valuation of low-rank coal.
- It influences royalty and fiscal calculations.
- It reduces the effect of short-term market weakness.
For August 2026, the HBA premium was approximately:
- +USD 3.32/t for 4100-4200 GAR coal.
- +USD 5.88/t for 3400 GAR coal.
SMARTIN Nes Summary
How HBA Affects Royalties
HBA serves as Indonesia’s official coal benchmark and is an important reference for royalty calculations and non-tax state revenue. While royalty percentages are determined by regulation, the benchmark price directly influences the value on which royalties are calculated. As HBA rises, royalty payments and government revenue typically increase. The impact is particularly important for lower-calorific-value coal, where HBA often remains above spot FOB market assessments, providing a more stable pricing reference for both producers and regulators.
