Jupiter will shower his grace on you in this year, but other important transits are not in synch with you in a positive way. So over all good results of Jupiter may be diluted by adverse effects of Saturn and Rahu Ketu Transits. Over all it will be a reasonably placed year for you.
2018 Capricorn Horoscope in a summary
Jupiter's transit will be favorable but on the other hand Saturn's Sade Sati will adversely affect your career and financial prospects. Flow of money will be tight and unplanned expenditure will disturb your budget. Avoid any risky or speculative transactions in this year. Rahu and Ketu have taken placements in 7th house and your moon sign respectively. Both transits are not favorable for you. You can expect tense conditions at your work place. This will be a difficult transit for Capricorn individuals, as it is accompanied with Saturn Saade sati also.
You may find that family and domestic issues and problems may crop up in this year and cause heavy stress on you . Jupiter is transiting in your 10th house which will be good. By virtue of Jupiter transiting in 10th its aspects would be on 2nd , 4th and 6th houses. Its aspecting education house and competitions house so students will in general have a better period, but other transits are not so favorable namely Saturn and Rahu Ketu transits are not much favorable for educational pursuits. Saturn Sade-Sati has started operating in your chart; and it is in it's first phase. In transit, Saturn is crossing over the 12th from your Moon-sign. This transit will be adverse for you health along with your spouse and childrens' health also.
Important Transits for Capricorn in 2018
Capricorn Horoscope 2018: Jupiter Transit
Jupiter is transiting in 10th house from Moon Sign. It will be in retrograde motion from 9th of March, and will turn direct from 11th of July till it leaves Capricorn Sign on 11th of October.
2018 Capricorn Horoscope: Saturn Transit
Saturn is transiting in 12th house from your moon sign. After this Saturn will be in retrograde motion from 18th of April , and will turn direct on 6th of September , and will remain in Capricorn Sign for remaining part of the year.
Capricorn 2018 Horoscope: Rahu-Ketu Transits
Rahu ( North Node ) and Ketu ( South Node ) are transiting in 7th and in your moon sign respectively.