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Singapore Individual Income Tax Calculator for 2012

chenhow — Wed, 21 Dec 2011 02:25:39 +0000

IRAS (Inland Revenue Autority of Singapore) has revised the income tax rate for 2012. Now lower income groups can enjoy lesser tax rate compare to year 2007 to 2011.

To accurately calculate the amount you need to pay for 2012, you can download the excel sheet calculator from IRAS (somehow it didn’t working when I tested it on 20th Dec 2011). Hence, I updated my tax calculator website to calculate my 2012 income tax, feel free to use it and give me your feedback.

http://tax.chenhow.net

Tax rates for resident individuals

From YA 2012 onwards^New!

Chargeable Income	Rate (%)	Gross Tax Payable ($)
First $20,000 Next $10,000	0 2	0 200
First $30,000 Next $10,000	- 3.50	200 350
First $40,000 Next $40,000	- 7	550 2 800
First $80,000 Next $40,000	- 11.5	3 350 4 600
First $120,000 Next $ 40,000	- 15	7 950 6 000
First $160,000 Next $ 40,000	- 17	13 950 6 800
First $200,000 Next $120,000	- 18	20 750 21 600
First $320,000 Above $320,000	- 20	42 350

For YA 2007 to 2011

Chargeable Income	Rate (%)	Gross Tax Payable ($)
First $20,000 Next $10,000	0 3.50	0 350
First $30,000 Next $10,000	- 5.50	350 550
First $40,000 Next $40,000	- 8.50	900 3 400
First $80,000 Next $80,000	- 14	4 300 11 200
First $160,000 Next $160,000	- 17	15 500 27 200
First $320,000 Above $320,000	- 20	42 700

Source: http://www.iras.gov.sg/irasHome/page04.aspx?id=1190

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Perl – Migrating User Accounts From Old To New Linux Distribution

chenhow — Wed, 22 Oct 2008 04:16:59 +0000

Migrating user accounts can be very troublesome when you have a large numbers of users. So, is always recommended to deploy active directory or LDAP to have a centralized authentication system.

If your organization don’t have AD or LDAP and have large portion of users needed to transfer from 1 to another server. Don’t worry, instead of manually key in all the records 1-by-1, there’s always a faster way to achieve this kind of process by using script.

I have written 2 Perl scripts to perform the migration.

Perl - Migrate user account script (186) (run in old server) – migrate user accounts from old server and generate a library with all the captured user data.
- Sample library – Perl - Sample User Library (166)
Perl - Setup User Account (251) (run in new server) – include the library generated by migrate_passwd.pl and add all the user_account to the new server.

Steps:

1) Download migrate_passwd.pl in the old server and run it

./migrate_passwd.pl /etc/passwd /tmp/accounts.pm

2) Then copy the /tmp/accounts.pm to the new server (put this file into the same directory of serversetup.pl)

3) Download serversetup.pl in the new server and run it

./serversetup.pl

4) Done

October 10, 2008 -- PHP – Tax Calculator (2)

PHP – Tax Calculator

chenhow — Fri, 10 Oct 2008 13:54:49 +0000

I wrote a simple tax calculator with PHP, feel free to use it. This tool only supports Singapore Tax 2008. All calculations are based on the documents and formula from the official site (http://www.iras.gov.sg). Please report to me if you found any errors or miscalculations.

Tax Calculator

October 22, 2008 -- Perl – Migrating User Accounts From Old To New Linux Distribution (6)

Filter ifconfig with Perl

chenhow — Tue, 07 Oct 2008 00:55:09 +0000

Linux/Unix: Below is the commands to filter ifconfig to show only the eth0 IP address in Linux.

Perl Script:

Option 1

eth0 | grep “inet addr”| awk {‘print $2′} | perl -e ‘while(<>){ ($a,$b)=split/:/; print $b; }’

Option 2

ifconfig eth0 | grep “inet addr” | perl -e ‘while (<>) { ($inet, $addr, $ip, $others) = /(\w+)\s+(\w+):(\S+)\s+(.*)/; print $3.”\n”;}’

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