Decide Between Paying Off Debt and Investing

You have debt and some spare money, and you have heard convincing arguments for both clearing it and investing it. This applies a proper decision framework to your actual balances and rates rather than leaving you to go with a feeling, ranking your debts by real cost and telling you where each pound is best sent first.

<context>
You have {DEBT_SUMMARY} (types, balances, and interest rates) and also have [monthly surplus / lump sum] you could put toward either clearing debt or starting to invest. You have heard arguments for both and want a principled framework rather than just a feeling.
</context>

<task>
**Apply a decision framework to your specific situation:**
1. Rank your debts by effective interest rate (include any employer pension match as a guaranteed return)
2. Apply the waterfall rule: any debt above [threshold rate, e.g. 5-6%] should almost always be cleared first
3. Identify the psychological value of being debt-free vs the mathematical value of investing
4. Check for any special cases: student loan (Plan 2 behaves differently), 0% deals with expiry dates
5. Produce a priority-ordered action plan: what to tackle in what sequence
</task>

<output_format>
- Debt ranked by rate (table: Debt | Balance | Rate | Action priority)
- Waterfall decision rule applied to your debts
- Special cases flagged (if any)
- Psychological vs mathematical trade-off (one paragraph)
- Priority action plan (numbered, with monthly allocation)
</output_format>