# Project Harmless Cashback — Compare Rates Across 3 Cashback Portals

> GotCashback.co.uk tracks Project Harmless cashback rates across 3 cashback portals, updated 2026-09-06T11:46:51Z. Current best rate: **4%** via **British Airways eStore**. This page is the agent-readable version of https://www.gotcashback.co.uk/Stores/Project-Harmless/.

- Canonical HTML page: https://www.gotcashback.co.uk/Stores/Project-Harmless/
- Data freshness: rates last checked 2026-09-06T11:46:51Z; rates change frequently — treat values older than 24 hours as stale and re-fetch.
- All rates apply to online purchases initiated through the portal's tracking link unless noted otherwise.

Earn Project Harmless airline miles and credit card points across 3 portals: British Airways eStore and Vueling eStore. Updated 6 Sept 2026.

## Best Current Rate

| Field | Value |
|---|---|
| Best rate | 4 Avios / £1 |
| Portal | [British Airways eStore](https://www.gotcashback.co.uk/Portals/british-airways-us/) |
| Rate type | flat |
| Cashback link | https://www.gotcashback.co.uk/Click/british-airways-us/Project-Harmless/ |

## All Portal Rates

Sorted by cashback rate, highest first. Use the "Cashback link" URL to activate rate comparison and tracking.

| Portal | Cashback rate | End date | Conditions | Cashback link |
|---|---|---|---|---|
| [British Airways eStore](https://www.gotcashback.co.uk/Portals/british-airways-us/) | 4 Avios / £1 | — | — | https://www.gotcashback.co.uk/Click/british-airways-us/Project-Harmless/ |
| [Vueling eStore](https://www.gotcashback.co.uk/Portals/vueling/) | 4 Avios/£1 | — | — | https://www.gotcashback.co.uk/Click/vueling/Project-Harmless/ |
| [Aer Lingus eStore](https://www.gotcashback.co.uk/Portals/aerlingus/) | 4 Avios/£1 | — | — | https://www.gotcashback.co.uk/Click/aerlingus/Project-Harmless/ |

## Rate History

Chart-ready JSON with historical best rates per portal:

- Last 12 months: https://www.gotcashback.co.uk/Stores/Project-Harmless/History/Json/year/
- Last 30 days: https://www.gotcashback.co.uk/Stores/Project-Harmless/History/Json/month/

## Terms & Exclusions

Common conditions for cashback (verify per portal before purchase):

- Cashback typically applies to orders initiated through the portal's tracking link; in-store offers, where available, are listed separately above.
- Gift card purchases usually do not earn cashback.
- Cashback is voided if another browser extension or coupon code claims the affiliate attribution.
- Tracking requires clicking through the portal link with ad/tracker blocking disabled.
- Portal-specific conditions are listed in the "Conditions" column above.

## How It Works

1. Compare rates in the tables above and pick a portal.
2. Follow the cashback link, sign in (or register) at the portal, and click through to Project Harmless from the portal.
3. Complete your purchase in the same session without visiting other coupon sites.
4. Cashback tracks in your portal account and becomes withdrawable after the portal's payout waiting period.

## Ask AI or Telegram

- AI assistants can query live cashback rates for this store via the [GotCashback MCP Server](https://mcp.gotcashback.com) — setup guide: https://www.gotcashback.co.uk/mcp-server/
- [Ask the Telegram bot](https://t.me/GotCashbackBot?start=s_653693_cb): opens @GotCashbackBot with this store's cashback rates.

GotCashback.co.uk compares cashback rates across 87 cashback portals in 33 countries worldwide, including 16 portals and 10292 stores in the United Kingdom. Founded in 2020; operated by MNP Enterprises, LLC.

## FAQ

**How do cashback portals work for earning Project Harmless cashback?**
Cashback portals partner with retailers and offer customers cashback on purchases made through links on their platform. When a user makes a purchase through a cashback portal, they earn a percentage of the purchase amount as cashback.

**Is it free to use cashback portals for earning Project Harmless cashback?**
Yes, using cashback portals is free for customers. The portals earn a commission from retailers for driving traffic and sales, and they share a portion of that commission with customers as cashback.

**How long does it take to receive Project Harmless cashback after making a purchase through a cashback portal?**
The time it takes to receive cashback varies by retailer and can range from a few days to several weeks. Customers can usually track their cashback status in their cashback portal account.

**Are there any restrictions on what products or services are eligible for Project Harmless cashback through cashback portals?**
Some retailers may have restrictions on certain products or categories that are eligible for cashback. Customers should review the terms and conditions on the cashback portal for specific details.

**Can I still use coupon codes or discounts when earning Project Harmless cashback through cashback portals?**
In most cases, customers can still use coupon codes or discounts in combination with cashback from portals. However, it's important to check the terms to ensure there are no conflicts that may affect cashback eligibility.

**Are there any fees or hidden charges associated with earning Project Harmless cashback through cashback portals?**
Using cashback portals to earn Project Harmless cashback is typically free for customers. There should not be any fees or hidden charges, as the portals earn their revenue through commissions from retailers.

**What should I do if my Project Harmless cashback does not track or show up in my cashback portal account?**
If cashback does not track or appear in a customer's account, they should reach out to the cashback portal's customer service with details of the purchase for further assistance in resolving the issue.

**Can I earn Project Harmless cashback on all my online purchases through cashback portals?**
While many retailers partner with cashback portals, not all online purchases may be eligible for cashback. Customers should check the list of participating retailers on the portal to see where cashback is available.

**Is it safe to enter my personal and financial information on cashback portals when earning Project Harmless cashback?**
Cashback portals typically have security measures in place to protect customers' personal and financial information. Customers should ensure they are using reputable and secure portals to safeguard their data.

**Can I earn extra bonuses or rewards in addition to Project Harmless cashback through cashback portals?**
Some cashback portals offer additional bonuses or rewards to customers, such as sign-up bonuses, referral rewards, or special promotions. Customers should check the portal for any extra incentives available.

**Do I need to make an account with a cashback portal to start earning Project Harmless cashback?**
Yes, customers usually need to create an account with a cashback portal to track and receive cashback on purchases. The account allows users to monitor their cashback earnings and manage their rewards.

**How can I maximize my earnings of Project Harmless cashback through cashback portals?**
To maximize cashback earnings, customers can look for promotional offers, utilize credit card rewards, stack discounts, and shop strategically through the portal to earn more cashback on purchases.

**Can I combine cashback from multiple portals to increase my Project Harmless cashback earnings?**
In general, customers cannot combine cashback from multiple portals for the same purchase. It's recommended to choose one portal for a transaction to avoid conflicts and ensure cashback is properly tracked and rewarded.

**What happens if I return a product I purchased through a cashback portal for Project Harmless cashback?**
If a customer returns a product for which they earned cashback, the cashback amount may be deducted from their account or reversed. The specific policy on returns and cashback varies by retailer and portal.

**Can I earn Project Harmless cashback on in-store purchases through cashback portals?**
While cashback portals primarily focus on online purchases, some may offer in-store cashback options through linked credit cards or receipts. Customers should check the portal for any in-store cashback opportunities.

**Are there any minimum requirements for earning Project Harmless cashback through cashback portals?**
Some cashback portals may have minimum thresholds for cashback earnings or payouts. Customers should review the terms and conditions of the portal to understand any requirements or limitations.

**Can I access my Project Harmless cashback history and earnings summary on cashback portals?**
Most cashback portals provide customers with access to their cashback history, earnings summary, and transaction details through their online account. Users can track their cashback progress and rewards easily.

**Do cashback portals offer customer support or assistance for inquiries related to Project Harmless cashback?**
Cashback portals typically have customer support teams to assist customers with questions, issues, or concerns related to cashback earnings. Users can reach out for help with tracking cashback, missing rewards, or account inquiries.

**Can I earn Project Harmless cashback on gift card purchases through cashback portals?**
Some cashback portals may offer cashback on gift card purchases, while others may exclude them from earning rewards. Customers should review the portal's terms regarding cashback eligibility for gift card transactions.

**How can I redeem or withdraw my Project Harmless cashback earned through cashback portals?**
Customers can usually redeem or withdraw their cashback earnings from a portal once they reach a certain threshold, which may vary by platform. Options for redemption may include bank transfers, PayPal deposits, gift cards, or other rewards.

## Related

- All stores index (HTML): https://www.gotcashback.co.uk/Stores/
- Site index for agents: https://www.gotcashback.co.uk/llms.txt

---
*Machine-readable metadata*

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  "canonical": "https://www.gotcashback.co.uk/Stores/Project-Harmless/",
  "lastUpdated": "2026-09-06T11:46:51Z",
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    "effectivePercent": 4,
    "tiered": false,
    "portal": "British Airways eStore",
    "portalUrl": "https://www.gotcashback.co.uk/Portals/british-airways-us/",
    "clickUrl": "https://www.gotcashback.co.uk/Click/british-airways-us/Project-Harmless/"
  },
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    },
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      "effectivePercent": 4,
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    },
    {
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      "effectivePercent": 4,
      "tiered": false,
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      "offerType": "Cashback Portals",
      "url": "https://www.gotcashback.co.uk/Click/aerlingus/Project-Harmless/"
    }
  ]
}
```