Willoughby.Money explains financial terminology in plain English from everyday concepts to complex instruments. Over 100 terms and growing.
Plain-English definitions of 100+ financial terms. Click any term to expand it. Filter by category or search below.
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A curated comparison of the most searched terms and their complexity.
| Term | Category | In One Sentence | Level |
|---|---|---|---|
| CLN | Corporate | A loan that converts into shares at a trigger event. | Advanced |
| Nominee Shares | Corporate | Shares held in someone else’s name on your behalf. | Intermediate |
| RTO | Personal | Buying a product via instalments over 6–36 months. | Beginner |
| LTO | Property | Leasing a property with an option to buy at the end. | Intermediate |
| APR | Personal | The true annual cost of borrowing including all fees. | Beginner |
| ISA | Personal | A tax-free savings or investment wrapper. | Beginner |
| CGT | Taxation | Tax on profit made when selling an asset. | Intermediate |
| SEIS / EIS | Investment | Government tax-relief schemes for investing in startups. | Advanced |
| P/E Ratio | Trading | How much investors pay per £1 of company earnings. | Intermediate |
| Bridging Loan | Property | Short-term finance to bridge a gap between transactions. | Intermediate |
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