CWG on a W-2 stands for City Wage Gross, a payroll label showing the portion of your earnings that a city, county, or other local jurisdiction can tax. You’ll usually find it in Box 18, and sometimes in Box 14a as a supplementary breakdown. It isn’t an IRS-defined term; payroll software providers created the shorthand to flag the wage base your local government uses to calculate what you owe.
Where CWG Appears on Your W-2
The IRS reserves Boxes 15 through 20 on the W-2 for state and local tax reporting. For local income tax, three boxes carry the information you need:
- Box 18 (Local wages, tips, etc.) holds the dollar amount of earnings subject to local tax. This is the CWG figure.
- Box 19 (Local income tax) shows how much your employer withheld from your paychecks for that locality.
- Box 20 (Locality name) identifies which city, county, or taxing district collected the tax.
The W-2 has room for two localities in these boxes. If you worked in more than two taxing jurisdictions during the year, your employer must issue an additional W-2 to report the rest.
Starting with the 2026 W-2, the IRS split the old Box 14 into Box 14a (Other) and Box 14b (Treasury Tipped Occupation Codes). Some employers use Box 14a to provide supplementary local tax details, labeled “CWG” or something similar, as a convenience for employees. Box 14a is a catch-all where employers can include any information they consider useful, from union dues to local tax breakdowns, as long as each item is labeled.1Internal Revenue Service. 2026 General Instructions for Forms W-2 and W-3
Because CWG is a payroll software label rather than an official term, the same number may appear under a different name depending on who processes your employer’s payroll. Common alternatives include “Loc. Wages,” “Local Gross,” or “City Tax Wages.” Match whichever label is used to the locality name in Box 20, and treat that dollar figure as your local wage base.
Why CWG Often Differs From Your Federal Wages
Seeing different wage amounts in different boxes is one of the more confusing parts of the W-2. Your federal taxable wages in Box 1, your Social Security wages in Box 3, and your local wages in Box 18 can each be a different number. Each taxing authority sets its own rules about what counts as taxable income, and CWG reflects the local rules, not federal ones.
Retirement Contributions
Traditional 401(k) contributions are the classic example. Federal law requires these pre-tax deferrals to be excluded from your Box 1 wages. Local jurisdictions set their own rules. Some cities exempt 401(k) contributions from local tax, which brings Box 18 in line with Box 1. Others don’t, and your CWG will be higher than your federal taxable wages because those retirement contributions are added back in. The treatment depends entirely on the specific municipality’s tax code.
Cafeteria Plan Benefits
Health insurance premiums and flexible spending account contributions paid through a Section 125 cafeteria plan are excluded from federal income tax.2Internal Revenue Service. FAQs for Government Entities Regarding Cafeteria Plans Whether those same deductions reduce your local taxable wages varies by jurisdiction. Some cities follow the federal treatment; others tax the full amount before the cafeteria plan deduction. When a city taxes these benefits, Box 18 will exceed Box 1 by that premium or contribution amount.
The practical takeaway: if Box 18 doesn’t match Box 1, that’s not automatically an error. Compare the two numbers against your pay stubs and your city’s rules before assuming something is wrong.
What To Do With the CWG Number at Tax Time
The CWG in Box 18 is the starting point when you prepare your local income tax return. Local returns are filed separately from your federal and state forms, usually with your city’s tax department or a regional collection agency. Federal law requires your employer to provide a W-2 showing the total wages subject to tax and the total amount withheld, which is what populates Boxes 18 and 19.3Office of the Law Revision Counsel. 26 USC 6051 – Receipts for Employees
Most local filing deadlines align with the federal April 15 date, but not all do. Some municipalities set their own deadlines or require quarterly estimated payments for self-employed workers. Check with your city’s tax office or collection agency for the exact due date, because missing it triggers the same kind of late-payment penalties and interest you’d face on a late federal return.
One common mistake: assuming that if your employer withheld local tax (shown in Box 19), you don’t need to file a local return. Many cities require a return even when withholding covers your entire liability. Filing is how you claim a refund if too much was withheld, or how you report a credit for taxes paid to a work city if you also owe your home city.
How To Fix a Wrong CWG Figure
If the CWG on your W-2 doesn’t match your own records, start by contacting your employer’s payroll or HR department. Common errors include applying the wrong locality code, using an incorrect tax jurisdiction for remote workers, or failing to account for mid-year address changes. The employer is responsible for issuing a Form W-2c (Corrected Wage and Tax Statement) to fix the mistake and must file the correction with the Social Security Administration.4Social Security Administration. Helpful Hints to Forms W-2c/W-3c Filing
There is no hard IRS deadline for how quickly your employer must produce the W-2c. Official guidance says corrections should be issued “as soon as possible” after the error is discovered.5Internal Revenue Service. About Form W-2 C, Corrected Wage and Tax Statements Wait for the corrected form before submitting your local return so the numbers match what your employer reported to the tax authorities.
If your employer is unresponsive or has gone out of business, you have a fallback. The IRS allows you to file Form 4852 as a substitute for a missing or incorrect W-2, using your final pay stub and other records to estimate your wages and withholding.6Internal Revenue Service. Form 4852 – Substitute for Form W-2 Before going that route, the IRS asks that you call 800-829-1040 after the end of February if you still haven’t received your W-2. For the local portion, contact your city’s tax office as well, since they may have their own process for handling missing or incorrect wage reports.
Other Local Tax Labels That Mean Roughly the Same Thing
CWG is one of several abbreviations payroll systems use for local tax data. Depending on where you work and which software your employer uses, you might see any of the following in Boxes 18 through 20 or in Box 14a:
- EIT (Earned Income Tax), used primarily in Pennsylvania municipalities.
- RITA (Regional Income Tax Agency), a collection agency serving hundreds of Ohio municipalities.
- CCA (Central Collection Agency), another Ohio-based collector handling local taxes for Cleveland and other cities.
- LST (Local Services Tax), a smaller per-paycheck tax charged by some Pennsylvania jurisdictions.
- Loc. Wages or Local Gross, generic labels some payroll systems use instead of CWG.
Whatever the abbreviation, the underlying idea is the same. Match the label to the locality name in Box 20, confirm the amount against your pay stubs, and use it as the starting figure on that jurisdiction’s tax return.