The phrase "additional penny" refers to an extra unit of currency, specifically one cent. It implies adding a small amount of money to an existing sum. Full definition
The Jet Life Penny Stock Blog on our website will be updated regularly for updates on our penny stock picks, additional penny stock investment ideas, and other notable stock market information. (jetlifepennystocks.com)
Because of the Durbin amendment, as of October 1, 2011, debit interchange is capped for transactions (21 cents, plus 5 basis points -LRB-.05 %), plus an additional penny for issuers that qualify for fraud) for debit cards issued by banks and credit unions with $ 10 billion in assets or more. (electronicpaymentscoalition.org)
It's time to face up to the fact that we might all need to pay a little bit more in tax to sustain our most treasured institution, which is why we have proposed an additional penny on income tax to raise an extra # 6 billion for the NHS and care system. (politics.co.uk)