The CIS300 form is the monthly return that contractors must submit to HM Revenue & Customs (HMRC) under the Construction Industry Scheme. HMRC sends the form at the start of each new tax month, pre-filled with your business details and any subcontractors previously verified or paid during the period. Variants include the CIS300(CS) for composite scheme contractors, the CIS300(Man) for manual submissions, and the CIS300(CS)(Man) combining both.
Contractors must verify pre-filled subcontractor data, add any new subcontractors with their UTR and verification number, and record all gross payments along with any tax deductions withheld. The authorized contractor representative must then sign the declaration before submission.
| Question | Answer |
|---|---|
| Form Name | Cis300 Form |
| Form Length | 1 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 15 sec |
| Other names | form cis300, cis300 guide, cis300 online, cis 300 return |