Legal Age in Sri Lanka: Drinking, Working, Voting, Driving

The figure, the Act and the section, grouped. This is the whole dataset the tool above runs on, so you can read the answer without touching a control.

Grade 1 admission is the one row that is not a birthday: it tests the child's age as at 31 January of the year of admission. Every other row is reached on the birthday itself.

There is no rate table and no money here. The tool does two things: it reports a figure fixed by a statute or a published departmental rule, and it does calendar arithmetic on a date of birth. Both halves are worth being precise about, because the common mistakes in this area are a stale figure and an off-by-one day.

Where each figure comes from

Every row in the dataset carries the Act or departmental publication it came from, the section or article number, and a short quotation, so the figure can be checked by eye rather than trusted. The Constitution supplies three of them: Article 4(e) and Article 101(1)(c) for the franchise at 18, Article 90 for standing as an MP, and Article 92(a) for the Presidency at 30. That last one is the figure most pages get wrong, because the 19th Amendment raised it to 35 and the 20th Amendment returned it to 30; the consolidated text carries the amendment footnote, and 30 is what it says now.

Alcohol and tobacco share one provision, section 31(1) of the National Authority on Tobacco and Alcohol Act, No. 27 of 2006, which is drafted as a prohibition on the seller rather than a permission for the buyer. That matters in practice: the penalty in section 31(2) lands on the shop, and section 31(3) gives the shop a defence if it took all reasonable steps to check. The employment floor of 16and the hazardous-work floor of 18 come from the Department of Labour's own child-labour page, as does the night-work rule for women in industrial undertakings.

Eight of the figures are not retyped here at all. The four per-class driving ages are imported from the module behind this site's driving licence eligibility checker, the retirement and two EPF ages from the module behind the retirement age calculator, and the Grade 1 cutoff from the admission calculator. Classes that share an age collapse into one row automatically, so if the Department of Motor Traffic re-ages a class, this page changes with it. Copies of a dataset go stale; one dataset with several readers does not.

The date arithmetic

A person attains age N on the Nth anniversary of their date of birth, and a threshold is reached when the date you are checking is on or after that anniversary. The statutes settle the boundary for us: section 31(1) bars sale to a person “under twenty-one years of age”, so the sale becomes lawful on the 21st birthday, not the day after. A tool written around “over 21” is wrong for exactly one day in every person's life, and it is the day they care about.

1. Exact age. Count the largest whole number of months from the date of birth that still lands on or before the date being checked, split that into years and months, then count the remaining whole days from that anchor. Month-by-month anchoring, not borrow-subtraction, so uneven month lengths and leap years come out right.
2. Unlock date. Date of birth plus N calendar years. No 365-day approximations, which drift by a day roughly every four years.
3. Days remaining. Whole days from the date being checked to the unlock date, zero once it is reached.
4. 29 February.The anniversary falls on 28 February in a year that is not a leap year, and keeps the 29th when the target year is one. This is the tool's stated convention, not a statutory rule.
5. Grade 1.The only row that is not an anniversary. The circular tests the child's age as at 31 January of the year of admission, so the answer is a school year. The tool reports the earliest admission year and links to the dedicated calculator for the rest of the circular.

Each unlock date is computed twice by two different routes, once by stepping whole months and once by rebuilding the date from its year, month and day components with explicit leap handling. They have to agree to the day, and the “dates cross-checked” badge in the results only appears when they do.

Some of the most searched age questions about Sri Lanka have no figure this page is willing to print. Each of these was looked for on 2026-10-04. Saying why is more use than guessing.

• Age of majority, marriage under the general law, criminal responsibility, and age of consent

  These sit in the Age of Majority Ordinance, the Marriage Registration Ordinance and the Penal Code. The consolidated texts are published on lawnet.gov.lk, which did not respond to this server on 2026-10-04, so no figure is shown rather than one transcribed from a secondary site.

• Muslim marriages

  Registered under the Muslim Marriage and Divorce Act, a separate personal-law regime with its own reform history. Not covered here, and no number is attached to it.

• Casino, betting and gaming entry

  No gazetted minimum age was verifiable on 2026-10-04 and the regulator's position has moved recently.

• Tattoos, piercings and nightclub entry

  There is no Sri Lankan statutory minimum age for these. Any figure you see is a shop or venue policy, not law.

• Blood donation

  The 18 to 60 range is a National Blood Transfusion Service clinical guideline, not a statute.

Military, police and public-service recruitment ages belong to the government job eligibility checker, and the drink-drive blood alcohol limit is a concentration rather than an age, so it lives in the blood alcohol calculator.

• Parliament of Sri Lanka: Constitution, consolidated text (Articles 4, 90, 92, 101)
• National Authority on Tobacco and Alcohol Act, No. 27 of 2006 (section 31)
• Department of Labour: Child Labour, Night Work and Maternity Benefits
• Minimum Retirement Age of Workers Act, No. 28 of 2021 (sections 2 and 3)
• Department of Motor Traffic: driving licence classes and minimum ages
• Employees' Provident Fund: qualifying age for full benefit
• Department for Registration of Persons: first NIC
• Ministry of Education: Grade 1 admission circular

Every source above was fetched and read on 2026-10-04. The page summarises published statute and departmental rules and names the section each figure comes from. It is not legal advice, and it does not cover personal law, which runs on its own statutes.