| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Invoicing (account)
• Discuss (mail) |
| Lines of code | 686 |
| Technical Name |
gb_uk_capital_allowances_worksheet |
| License | OPL-1 |
| Website | https://gencbaris.com/odoo_plugins/ |
| Versions | 18.0 19.0 |
| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Invoicing (account)
• Discuss (mail) |
| Lines of code | 686 |
| Technical Name |
gb_uk_capital_allowances_worksheet |
| License | OPL-1 |
| Website | https://gencbaris.com/odoo_plugins/ |
| Versions | 18.0 19.0 |
UK Capital Allowances
Pool plant & machinery, compute AIA, WDA and FYA, and produce a CT-feed worksheet
Nothing native computes UK capital allowances in Odoo, so accountants and tax preparers do it in fragile Excel workbooks that break when rates change or a disposal complicates the pool. This app computes capital allowances on plant and machinery directly in Odoo: main, special and single-asset pools, AIA allocation, reducing-balance WDA with period pro-rating, FYA full expensing, small-pools write-off and balancing adjustments. It produces a clean per-period worksheet you feed into your own CT600 process. It is a worksheet and format generator only with configurable HMRC rates; it does not file anything with HMRC.
Key Features
Main, special and single-asset pools
gb.capall.pool models main-rate (18% WDA), special-rate (6% WDA) and single-asset pools, each with a configurable wda_rate, small_pool_limit and aia_eligible flag. _onchange_pool_type sets the standard 18% or 6% rate automatically when you pick the pool type.
AIA allocated to the best additions first
action_compute orders pools highest-WDA-rate first so the Annual Investment Allowance lands on the most beneficial special-rate additions. AIA is absorbed against the prorated annual limit and any overflow spills into the pool balance as aia_claimed and additions_aia.
Reducing-balance WDA with period pro-rating
_compute_pool applies the Writing Down Allowance to the brought-forward value plus additions less disposals, at the pool's wda_rate scaled by period_days/365. _compute_period prorates both the WDA and the aia_limit_prorated for short or long accounting periods.
FYA / full-expensing 100% relief
Assets flagged with relief = fya on gb.capall.asset are claimed at 100% in year as fya_claimed and never enter the pool. AIA and WDA-only additions are handled separately, so each addition gets the relief you select per asset.
Small-pools write-off and disposals
When a pool balance falls at or under its small_pool_limit (default GBP 1,000) the whole balance is written off as WDA. Disposals during the period reduce the pool capped at cost, and a fully disposed single-asset pool produces a balancing allowance or charge via balancing_adjustment.
Brought-forward chaining across periods
_pool_brought_forward reads each pool's carried_forward from the most recent prior finalised computation, so once a period is finalised its closing balances become the next period's opening figures automatically without re-keying.
Per-pool CT-feed worksheet
Each gb.capall.computation.line shows brought_forward, AIA/FYA/pool additions, disposals, AIA/FYA/WDA claimed, balancing adjustment and carried_forward. _compute_totals rolls these into total_allowances, and worksheet_summary returns a headline dict ready to feed your CT600.
Quick-add asset wizard, configurable rates
The gb.capall.add.asset.wizard records an addition (with AIA/FYA/WDA relief) and can recompute open worksheets covering the acquisition date. All HMRC rates and limits (AIA cap, WDA rates, small-pool limit) are fields you set, so the module stays correct year to year. It generates the worksheet only and never files with HMRC.
Use Cases
Screenshots
Add Asset
Assets
Computations
Pools
Why Choose This Module
Compute UK capital allowances on plant and machinery directly in Odoo and produce a clean worksheet you can feed into your CT600 process. This is a worksheet and format generator only — it does NOT file anything with HMRC. All rates and limits are configurable so the module stays correct year to year.
Specifications
- Compatible: Odoo 18.0 / 19.0
- License: LGPL-3
- Languages: 35+
- Author: Baris Genc
- Dependencies: account
- Support: odoo@gencbaris.com
Odoo Proprietary License v1.0 This software and associated files (the "Software") may only be used (executed, modified, executed after modifications) if you have purchased a valid license from the authors, typically via Odoo Apps, or if you have received a written agreement from the authors of the Software (see the COPYRIGHT file). You may develop Odoo modules that use the Software as a library (typically by depending on it, importing it and using its resources), but without copying any source code or material from the Software. You may distribute those modules under the license of your choice, provided that this license is compatible with the terms of the Odoo Proprietary License (For example: LGPL, MIT, or proprietary licenses similar to this one). It is forbidden to publish, distribute, sublicense, or sell copies of the Software or modified copies of the Software. The above copyright notice and this permission notice must be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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