16. TRADE AND OTHER RECEIVABLES
 
2021 
R'm
 
2020 
R'm 
Trade receivables  3 529  3 616 
Less: Provision for ECL  (432) (403)
Net trade receivables  3 097  3 213 
Accrued income  415  222 
Other receivables1, 3  294  379 
Prepaid expenses  235  232 
Balance at 30 September  4 041  4 046 
Reconciliation of provision for ECL? 
Balance at 1 October  (403) (220)
Recovery of amounts previously provided for  –  4 
Disposal of a subsidiary  14  – 
ECL raised from continuing operations  (116) (171)
ECL raised from discontinued operation  –  (15)
Debt written off  51  33 
Effect of foreign currency movement  22  (34)
Balance at 30 September  (432) (403)
1 While other receivables are also subject to the impairment requirements of IFRS 9, the identified impairment loss was negligible. The provision was calculated using a simplification of the general provision method.
2 Refer note 32 – risk management (credit risk).
3 Other receivables consist of a number of insignificant balances.

The carrying amounts of the trade receivables include some receivables balances in AMG, which are factored on a full recourse basis, and hence which the Group continues to recognise in their entirety in the statement of financial position. The amount repayable under the factoring agreement is presented as a secured borrowing in note 20.