$500 (dollars)

Drop the duplicate: use $500 or 500 dollars - not $500 dollars. Pick the symbol or the word and stay consistent.

Quick answer

Do not use a currency symbol and the currency word together. Use the symbol (for example, $500) or the words (500 dollars / five hundred dollars), not both.

Correct: I paid $500 for the new phone.
Correct (words): I paid five hundred dollars for the new phone.
Avoid: I paid $500 dollars for the new phone.

Core explanation: one marker is enough

The currency symbol already identifies the unit. Adding "dollars" repeats that information and looks redundant. Choose one form and apply it consistently in the same document.

Symbol + number: $500 (correct)
Number + currency word: 500 dollars (correct)
Symbol + number + word: $500 dollars (incorrect)

Real usage and tone: when to use $ vs words

Use the symbol for quick figures: tables, headlines, emails, chat and invoices. Use words or spelled-out numbers in formal prose, legal text, or when a style guide requires it.

For international clarity, use an ISO code (USD 500 or US$500). Never mix the ISO code with the word "dollars" (avoid "US$500 dollars").

Quick figures and spreadsheets: $500
Formal narrative or legal text: five hundred dollars
International contexts: USD 500 or US$500

Examples: 6 common wrong → right pairs (copyable)

Incorrect first, corrected second - ready to copy into emails, reports, or posts.

Wrong: I paid $500 dollars for the new phone.
Right: I paid $500 for the new phone.
Wrong: They awarded her $10,000 dollars in damages.
Right: They awarded her $10,000 in damages.
Wrong: The grant provides $2 million dollars over five years.
Right: The grant provides $2 million over five years.
Wrong: We owe $3.50 dollars for the parking meter.
Right: We owe $3.50 for the parking meter.
Wrong: I paid $500 USD dollars for the shipment.
Right: I paid US$500 for the shipment.
Wrong: Donations: $100 dollars by Friday.
Right: Donations: $100 by Friday.

Work examples: emails, expense reports, invoices (3)

In the workplace, the symbol keeps notes concise; use ISO codes on international invoices.

Wrong: Expense: I paid $1,200 dollars for the software license; please reimburse.
Right: Expense: I paid $1,200 for the software license; please reimburse.
Wrong: Invoice note: Consulting fee $3,500 dollars (paid).
Right: Invoice note: Consulting fee - $3,500 (paid).
Wrong: I paid $250 dollars to the vendor last week; receipt attached.
Right: I paid $250 to the vendor last week; receipt attached.

School examples: budgets, permission slips and club funds (3)

Choose symbols for short lines and newsletters; spell out amounts for formal parent-facing text.

Wrong: We paid $300 dollars toward the field trip fee.
Right: We paid $300 toward the field trip fee.
Wrong: The PTA paid $1,500 dollars for new computers.
Right: The PTA paid $1,500 for new computers.
Wrong: Budget: five hundred dollars ($500 dollars) allocated for supplies.
Right: Budget: five hundred dollars ($500) allocated for supplies.

Try your own sentence

Test the whole sentence rather than the phrase alone - context usually shows whether the symbol or the word fits better.

Casual examples: texts, social posts and chat (3)

Keep messages short: use the symbol to save space and stay consistent across posts.

Wrong: Paid $12 dollars for dinner tonight - amazing tacos.
Right: Paid $12 for dinner tonight - amazing tacos.
Wrong: I paid $30 dollars at the garage sale and got a great deal.
Right: I paid $30 at the garage sale and got a great deal.
Wrong: Got it for $7 dollars on sale!
Right: Got it for $7 on sale!

How to fix your own sentence (rewrite_help)

Use this quick checklist and sample rewrites to remove duplicate currency markers.

Locate: find "$" followed by "dollars" or a currency name after a number.
Decide: choose symbol or words and apply it across the document.
Replace: remove the duplicate and check spacing, commas and hyphens.

Rewrite:
Original: I paid $500 dollars, so I need reimbursement. → Fix: I paid $500, so I need reimbursement.
Rewrite:
Original: We paid $2,000 dollars for the server hardware. → Fix (formal): We paid two thousand dollars for the server hardware.
Rewrite: Original (casual): Paid $5 dollars for coffee. → Fix (casual): Paid $5 for coffee.

Hyphenation, spacing and grammar notes

Small formatting details affect clarity-keep them consistent.

No space between the symbol and number in English: $500 (not $ 500).
Use commas in thousands for readability: $10,000.
Compound adjectives: hyphenate after amounts: a $50-per-hour rate or a fifty-dollar fine.
Decimals: show cents with two digits: $2.50.
International: prefer USD 500 or US$500; do not write "US$500 dollars."

Usage: Correct: She earned a $50-per-hour wage.
Usage: Correct spacing and commas: The laptop costs $1,299.

Similar mistakes to watch for

Fixing "$500 dollars" is a good prompt to scan for other currency and payment errors.

Don't repeat other currency names: £50 pounds → £50 or 50 pounds.
Don't mix symbol, ISO code and word: $500 USD dollars → US$500 or $500.
Check verb clarity in payment sentences: "I paid him" vs "He paid me."

Wrong: I paid €20 euros at the store.
Right: I paid €20 at the store.
Wrong: I paid $500 USD dollars for the equipment.
Right: I paid US$500 for the equipment.
Wrong: I paid him $200 dollars and he paid me back later.
Right: I paid him $200, and he paid me back later.

Memory trick: pick one and stick to it

Think "Sign Or Word" - SOW. If you see a sign ($), delete the following "dollars." If you spell the number, add the currency word.

If you see "$", remove the following "dollars".
If you spell out the number, add "dollars" (five hundred dollars).
When unsure, use the symbol for short lines and words for formal sentences.

FAQ

Should I write $500 or 500 dollars?

Both are correct. Use $500 for quick figures, tables and casual text. Use 500 dollars (or five hundred dollars) in formal running prose or where a style guide requires spelled amounts.

Is "$500 dollars" grammatically incorrect?

It's redundant. The symbol already indicates the currency, so adding "dollars" repeats the unit-remove one.

How do I write amounts for international readers?

Use the ISO code (USD 500 or US$500) to avoid ambiguity. Don't combine the ISO code with the currency word.

Do style guides allow "$500 dollars"?

Most major style guides recommend choosing one format and not combining the symbol with the currency name.

Will grammar checkers catch this error?

Yes-many writing tools flag duplicate currency markers. If unsure, paste the sentence into a checker to get a quick suggestion.

Quick fix: paste a sentence to check

When unsure, paste the full sentence into a checker to remove duplicate currency markers and confirm spacing and hyphenation.

Tip: adopt a single rule for your documents-symbol for quick figures, words for formal prose-to keep writing consistent and professional.