# 0s and 1s CIS API

**Canonical:** https://apis.io/apis/0sand1s-co-uk/0sand1s-co-uk-cis-api/  
**Provider:** 0s and 1s — https://apis.io/providers/0sand1s-co-uk/  
**Base URL:** https://0sand1s.co.uk  
**Documentation:** https://0sand1s.co.uk/developers

0s and 1s CIS API is published by [0s and 1s](https://apis.io/providers/0sand1s-co-uk/) on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 1 JSON Schema definition. Tagged areas include CIS. The published artifact set on APIs.io includes an OpenAPI specification and 1 JSON Schema.

The CIS API from 0s and 1s — 7 operation(s) for cis.

## Operations (14)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/v1/deduction` | CIS deduction, gross to net |
| POST | `/api/v1/deduction` | CIS deduction, gross to net |
| GET | `/api/v1/gross-up` | CIS gross up, net to gross |
| POST | `/api/v1/gross-up` | CIS gross up, net to gross |
| GET | `/api/v1/tax-month` | CIS tax month and deadlines |
| POST | `/api/v1/tax-month` | CIS tax month and deadlines |
| GET | `/api/v1/late-penalties` | CIS late filing penalties |
| POST | `/api/v1/late-penalties` | CIS late filing penalties |
| GET | `/api/v1/gross-payment-turnover-test` | CIS gross payment status turnover test |
| POST | `/api/v1/gross-payment-turnover-test` | CIS gross payment status turnover test |
| GET | `/api/v1/needs-verification` | Does a CIS subcontractor need verifying? |
| POST | `/api/v1/needs-verification` | Does a CIS subcontractor need verifying? |
| GET | `/api/v1/nil-return-check` | Is a CIS nil return due? |
| POST | `/api/v1/nil-return-check` | Is a CIS nil return due? |

## Machine-readable artifacts (3)

- **OpenAPI** — https://artifacts.apis.io/0sand1s-co-uk/openapi/0sand1s-co-uk-cis-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/0sand1s-co-uk/json-schema/0sand1s-co-uk-tool-response-schema.json
- **APIsJSON** — https://artifacts.apis.io/0sand1s-co-uk/apis.yml

## Tags

CIS

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/0sand1s-co-uk/0sand1s-co-uk-cis-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/0sand1s-co-uk/.