How Negative Marking Works in MCQ Exams (With Examples)

In an exam with negative marking, a wrong answer doesn’t just earn zero; it costs you marks. It’s common in competitive entrance tests, recruitment exams and university MCQ papers. Understanding it changes how you should approach every question you’re unsure about.

The basic rule

Final score = (Correct × marks per correct) − (Wrong × penalty per wrong)

Unattempted questions score zero in almost every exam. They’re neither rewarded nor penalised.

Common schemes

Scheme	Correct	Wrong
¼ negative	+1	−0.25
⅓ negative	+1	−0.33
½ negative	+1	−0.5
+4 / −1 (e.g. JEE Main, NEET MCQs)	+4	−1
+3 / −1	+3	−1
No negative marking	+1	0

“¼ negative marking” can mean 0.25 marks when each question is worth 1, or a quarter of the question’s value, as in the +4/−1 pattern. The negative marks calculator has an option for each. Always check your exam’s official notice, because schemes change between years and sections.

Step-by-step example

A 200-question test: +1 per correct answer, −0.25 per wrong answer.

You answer 140 correctly, 40 wrong and leave 20 blank.

Marks gained: 140 × 1 = 140
Marks lost: 40 × 0.25 = 10
Final score: 140 − 10 = 130 / 200 (65%)
Accuracy: 140 ÷ 180 attempted = 77.8%

Without negative marking you’d have scored 140, so the 40 wrong answers cost you 10 marks, the equivalent of 10 correct answers.

Another example: +4 / −1

A 180-question paper (720 marks): +4 correct, −1 wrong.

You get 120 correct, 35 wrong, 25 unattempted.

Gained: 480
Lost: 35
Final: 445 / 720 (61.8%)

Why exams use negative marking

With four options, a student who guesses blindly on every question would score about 25% with no penalty. Negative marking:

discourages random guessing, so scores reflect knowledge
rewards accuracy, separating confident candidates from lucky ones
reduces the impact of chance in high-stakes rankings

A penalty of 1 ÷ (options − 1) of a question’s value, which is ⅓ for 4 options, makes blind guessing exactly neutral on average.

How it changes your strategy

The key question for any uncertain answer is: what are my odds of being right? With a ¼ penalty and four options, even a pure guess has a tiny positive expected value; eliminate one option and guessing becomes clearly worthwhile. With harsher penalties, the maths changes. The full breakdown is in Should You Guess in an Exam With Negative Marking? The Maths Says….

Tracking accuracy in mock tests

Two numbers matter after every practice test:

Score: what you actually earned
Accuracy: correct ÷ attempted

If your accuracy is below about 60–70%, you’re losing a lot to negatives. Slow down and attempt fewer, surer questions. If it’s above 90%, you may be leaving marks on the table by skipping too much. More tactics: MCQ Exam Strategy: How to Maximise Your Score With Negative Marking.

Enter your own numbers below to see your real score.