As the official cash rate goes lower and lower, and lenders are forced to operate on ever finer margins, a number of smaller lenders are feeling the pressure. Of the 78 mortgage lenders in the Infochoice.com.au database that cut their standard variable rates in August, in response to the Reserve Bank's 25 basis point reduction in the cash rate, eight cut their rates by less than 25 points. All were small financial institutions whose rates are well below those of the majors. All of them have been able to maintain their pricing advantage over the majors following the latest round of cuts, but it is clear some lenders are facing margin pressure. Bankmecu has cut its standard variable rate by 15 basis points, from 5.79 per cent to 5.29 per cent. Unicredit has also cut its rate by 15 basis points, from 5.4 per cent to 5.25 per cent. Goldfields Money cut its rate by 17 basis points, from 5.42 per cent to 5.25 per cent.CUA, Teachers Mutual Bank, Police Bank, Macquarie Credit Union and Bankstown Credit Union all cut their rates by 20 basis points. All are still offering cheaper rates than the Big Four.At the other end of the scale, Westpac cuts its rates by 28 basis points, Homeloans Ltd by 27 bps and loans.com.au by 26 bps.Among the Big Four banks, ANZ and National Australia Bank have standard variable rates of 5.88 per cent, Commonwealth Bank's rate is 5.9 per cent and Westpac's is 5.98 per cent.The lowest advertised standard variable rate in the market is 4.49 per cent, offered by loans.com.au. UBank's rate is 4.62 per cent, Pacific Mortgage Group's is 4.77 per cent, My Mortgage Freedom's is 4.83 per cent, State Custodians' is 4.84 per cent, iMortgage's is 4.89 and eMoney's is 4.9 per cent.