Herstal rate history — COLA (Post Allowance) (%). Query any past effective date directly via the API.
| Effective date | COLA (Post Allowance) (%) |
|---|---|
| Jul 12, 2026 | 42% |
| Jun 29, 2025 | 50% |
| Apr 20, 2025 | 42% |
| Mar 9, 2025 | 35% |
| Jan 26, 2025 | 30% |
| Nov 3, 2024 | 35% |
| Aug 25, 2024 | 42% |
| Aug 11, 2024 | 35% |
| Jul 28, 2024 | 42% |
| Apr 7, 2024 | 35% |
| Mar 24, 2024 | 42% |
| Feb 11, 2024 | 35% |
| Dec 31, 2023 | 42% |
| Dec 17, 2023 | 35% |
| Dec 3, 2023 | 42% |
| Oct 8, 2023 | 35% |
| Mar 26, 2023 | 42% |
| Mar 12, 2023 | 35% |
| Jan 29, 2023 | 42% |
| Dec 4, 2022 | 35% |
| Nov 6, 2022 | 30% |
| Oct 9, 2022 | 25% |
| Jul 31, 2022 | 30% |
| May 8, 2022 | 35% |
| Dec 5, 2021 | 42% |
| Oct 10, 2021 | 50% |
| Sep 12, 2021 | 42% |
| Aug 29, 2021 | 35% |
| Aug 15, 2021 | 42% |
| Aug 1, 2021 | 35% |
| Apr 25, 2021 | 42% |
| Apr 11, 2021 | 35% |
| Oct 11, 2020 | 42% |
| Aug 30, 2020 | 35% |
| Jun 21, 2020 | 30% |
| Jul 21, 2019 | 25% |
| Jun 23, 2019 | 30% |
| May 12, 2019 | 25% |
| Apr 28, 2019 | 30% |
| Apr 14, 2019 | 25% |
| Aug 5, 2018 | 30% |
| Jul 22, 2018 | 35% |
| Jun 10, 2018 | 30% |
| Jan 7, 2018 | 35% |
| Dec 24, 2017 | 30% |
| Dec 10, 2017 | 35% |
| Oct 15, 2017 | 30% |
| Sep 17, 2017 | 35% |
| Jul 9, 2017 | 30% |
| Apr 2, 2017 | 25% |
| Mar 5, 2017 | 20% |
| Feb 5, 2017 | 25% |
| Dec 11, 2016 | 20% |
| Sep 18, 2016 | 25% |
| Sep 4, 2016 | 30% |
| Jun 12, 2016 | 25% |
| Apr 17, 2016 | 30% |
| Dec 27, 2015 | 25% |
| Nov 29, 2015 | 20% |
| Sep 20, 2015 | 25% |
| Sep 6, 2015 | 30% |
| May 17, 2015 | 25% |
| May 3, 2015 | 20% |
| Feb 8, 2015 | 25% |
| Jan 25, 2015 | 30% |
| Nov 16, 2014 | 35% |
| Nov 2, 2014 | 42% |
| Oct 19, 2014 | 35% |
| Jun 1, 2014 | 42% |
| May 4, 2014 | 50% |
| Apr 6, 2014 | 42% |
| Mar 23, 2014 | 50% |
| Jan 12, 2014 | 42% |
The same location's rates under other U.S. travel-rate systems:
The post (cost-of-living) allowance offsets higher overseas costs of goods and services for U.S. government civilian employees assigned to Herstal. It is expressed as a percentage of spendable income and is used by mobility, HR and payroll teams to compute overseas compensation.
The exact request that returns this page's data. Change the
date parameter to query any historical effective
date, or pull it straight into your ERP, payroll, or expense system.
curl -H "X-API-Key: YOUR_KEY" \ "https://api.allowancesapi.com/v1/dssr/allowances/BE?type=cola"{
"effective_date": "2026-07-12",
"results": [
{
"cola": {
"effective_date": "2026-07-12",
"rate": 42
},
"iso_code": "BE",
"location": "Herstal",
"postcode": "10818"
}
],
"verification_url": "https://aoprals.state.gov/content.asp?content_id=184\u0026menu_id=78"
}The current DSSR COLA (Post Allowance) rate for Herstal, Belgium is 42%, effective Jul 12, 2026.
In Jun 29, 2025 the COLA (Post Allowance) rate was 50%. The full history is shown in the table above and is queryable by effective date via the API.
Allowances API is not affiliated with, endorsed by, or sponsored by any U.S. Government agency. All rate data is sourced from official public rate tables and re-published in a normalized format.