United States
Hong KongHow to study mortgage calculations
Fifteen minutes daily rather than a single block. Work each of the six calculations from a written scenario, aim for under a minute each, and always identify what the distractor was built from.
Calculations decay faster than anything else on this syllabus, which is why a block in week two is gone by week six.
Daily and short is the answer.
The drill
Five scenarios, one of each type, fifteen minutes. Written as a scenario rather than as bare numbers, because reading the stem correctly is half the task.
- Read the scenario once
- Identify which calculation is being asked for
- Extract only the numbers that belong in it
- Compute
- Check what the wrong options were built from
That last step is the one people skip and it is the most useful.
What the distractors are made of
| Mistake | The wrong answer it produces |
|---|---|
| Using net instead of gross income | A higher ratio |
| Using the appraisal when the price is lower | A lower loan-to-value |
| Including the housing payment twice | An inflated debt ratio |
| Forgetting the ARM cap | The fully indexed rate |
| Counting utilities as debt | An inflated debt ratio |
Every one of those is a plausible number that a careless candidate would accept. Recognizing the mistake behind an option is faster than recomputing.
You are not trying to get them right eventually. You are trying to get them right in under a minute, from a cold start, at question 84 with time pressure building.
Use the right tool
A plain four-function calculator. The exam provides an on-screen one and nothing else, so practicing on a financial calculator builds a habit you cannot use.
When to stop drilling
When all six land under a minute for a week running. Then keep the fifteen minutes anyway, because stopping is how they fade.
Common questions
How should I practice NMLS calculations?
Fifteen minutes daily on five scenarios, one of each type, rather than a single long block.
How fast should each calculation be?
Under a minute from a cold start, without re-reading the stem twice.
Why check the wrong options?
Distractors are built from specific mistakes. Recognizing the mistake is faster than recomputing.
What calculator should I use?
A plain four-function one, matching what the exam provides.
When can I stop drilling?
When all six land under a minute for a week. Keep the fifteen minutes anyway, because they fade without it.